# Silicraft Industrial

> OEM / ODM silicone manufacturer founded in 2007 in Shenzhen. Three plants (Shenzhen precision LSR, Suzhou medical cleanroom, Dongguan industrial compression) molding food-grade, medical-grade, electronic-grade, infant-care and industrial silicone parts. 18 years of operation, 312 active OEM clients, 1,840 molds in rotation, shipping to 41 countries.

Silicraft is an OEM / ODM silicone manufacturer. It is a factory, not a trading
company: 1,840 molds in rotation, 64 tooling engineers, and three plants in
Shenzhen (precision liquid silicone rubber), Suzhou (medical cleanroom) and
Dongguan (industrial-scale compression). Silicraft was founded in 2007 in Shenzhen as a single compression press in a 600 m² workshop. Eighteen years later we operate three plants — Shenzhen (precision LSR), Suzhou (medical cleanroom), and Dongguan (industrial-scale compression) — and ship to 41 countries. Our 64-person engineering team holds 23 utility patents in mold-flow simulation, multi-cavity hot-runner balancing, and silicone-to-metal overmolding. We are not a trading company. We are the people on the shop floor.

## Key facts

- Legal name: Silicraft Industrial Co., Ltd. (Hong Kong SAR)
- Founded: 2007, Shenzhen
- Plants: 3 — Shenzhen, Suzhou, Dongguan
- Countries shipped to: 41
- Active OEM clients: 312
- Annual capacity: 2,400 tonnes
- Tightest tolerance: ±0.05 mm
- Certifications: ISO 13485 (Medical devices QMS, TÜV SÜD, 2024); ISO 9001 (Quality management, BSI, 2024); FDA Registered (21 CFR Part 820, US FDA, 2024); LFGB (Food contact, DE, TÜV Rheinland, 2024); EU 1935/2004 (Food contact, EU, SGS, 2024); RoHS / REACH (Hazardous substances, Intertek, 2024); CE Marking (European conformity, Self-declared + audited, 2024); IATF 16949 (Automotive QMS, SGS, 2024); Class 8 Cleanroom (ISO 14644-1 medical molding, Internal + third-party, 2024)
- Contact: silicraft@lumorb.com

## What we mold

- **Food-Grade** (FG-001) — Baking molds, kitchen utensils, baby feeding products, coffee machine gaskets. Peroxide-cured, platinum-cured, or post-baked to remove volatiles. Durometer Shore A 30–80, range -40°C to 230°C. Standards: FDA 21 CFR 177.2600, LFGB §31, EU 1935/2004. Applications: Bakeware, Kitchen tools, Coffee & tea, Baby feeding.
- **Medical-Grade** (MG-002) — Implantable-grade liquid silicone rubber for seals, valves, catheter balloons, and respiratory interfaces. White-room molding in Class 8 cleanrooms. Durometer Shore A 40–70, range -50°C to 200°C. Standards: ISO 13485, USP Class VI, FDA 21 CFR 211, ISO 10993. Applications: Seals & gaskets, Catheter components, Respiratory masks, Diagnostic cartridges.
- **Electronic-Grade** (EG-003) — Flame-retardant, low-outgassing LSR for connectors, keypads, and high-voltage insulation. Tested for ionic cleanliness and Dk/Df. Durometer Shore A 50–80, range -60°C to 250°C. Standards: UL 94 V-0, RoHS, REACH, IPC. Applications: Connector seals, Keypad overlays, EV battery insulation, LED lenses.
- **Infant & Mother Care** (IM-004) — Soft-touch pacifiers, teething rings, breast pump flanges. Ultra-low modulus for infant oral contact. Lot-traceable from raw batch to retail SKU. Durometer Shore A 20–50, range -30°C to 180°C. Standards: EN 14350, FDA 21 CFR 177.2600, TPE-free, BPA-free. Applications: Pacifiers, Teethers, Bottle nipples, Breast pump parts.
- **Industrial-Grade** (IG-005) — High-temperature, oil-resistant FKM and VMQ compounds. Compression-molded for high-pressure sealing under chemical and thermal load. Durometer Shore A 40–90, range -70°C to 300°C. Standards: ASTM D2000, SAE J200, MIL-SPEC. Applications: Automotive gaskets, Aerospace seals, Pump diaphragms, Heat-resistant boots.

## How a project runs

- **01 Inquiry & DFM review** (1–2 days) — Send STEP / IGES / hand sketch. Our application engineer returns a DFM memo within 48 hours, flagging undercuts, draft angles, and shrinkage compensation.
- **02 Material selection** (1 day) — We propose 1–3 candidate compounds, each with a TDS, regulatory map, and prior case study. You choose. We sign the material specification.
- **03 Tool design & sampling** (10–14 days) — Steel or aluminum tooling. T1 samples shipped by air; you receive 5–10 pieces for fit, finish, and compliance testing.
- **04 Validation & PPAP** (7 days) — First Article Inspection report, CMM measurements, accelerated aging, and (for medical) biocompatibility summary. You sign off before series production.
- **05 Series production** (Per order) — Press capacity 50T to 800T. Injection, compression, and transfer molding. In-line vision inspection on every cavity.
- **06 Post-processing** (1–3 days) — Deflashing, post-bake (200°C × 4h for medical), laser marking, pad printing, and assembly. All in the same campus.
- **07 Pack & ship** (Per order) — Cleanroom bagging, master carton, ISPM-15 pallet. FOB Shenzhen / CIF any port. Lot certificates and CofA emailed within 24h of dispatch.

## Commercial terms

- Every part is quoted per project. There is no public price list.
- Typical minimum order quantities and lead times are listed per part in the catalog.
- DFM feedback on a drawing is returned within 48 hours.
- Tooling (design + T1 sampling) takes 10–14 days.
- Certificates and test reports are released once an NDA is executed.

Machine-readable commercial terms: https://silicraft.lumorb.com/pricing.md

## Product catalog

25 part families. Full catalog: https://silicraft.lumorb.com/products/

- [Silicone Baking Mold](https://silicraft.lumorb.com/products/silicone-baking-mold): Twelve-cavity muffin tray, platinum-cured. Hardness Shore A 40–60; tolerance ±0.15 mm; process LSR injection; MOQ 500 pcs; lead time 18 days. Compiles with FDA 21 CFR 177.2600, LFGB §31, EU 1935/2004.
- [Silicone Kitchen Utensil Set](https://silicraft.lumorb.com/products/silicone-kitchen-utensil-set): Over-molded heads on beech handles. Hardness Shore A 50–70; tolerance ±0.20 mm; process HCR compression; MOQ 1,000 sets; lead time 21 days. Compiles with FDA 21 CFR 177.2600, LFGB §31, BPA free.
- [Coffee Machine Gasket](https://silicraft.lumorb.com/products/coffee-machine-gasket): Group-head seal rated to 230 °C. Hardness Shore A 50–60; tolerance ±0.10 mm; process LSR injection; MOQ 2,000 pcs; lead time 14 days. Compiles with FDA 21 CFR 177.2600, LFGB §31, NSF.
- [Silicone Ice Cube Tray](https://silicraft.lumorb.com/products/silicone-ice-cube-tray): Eight large cubes with a flexible lid. Hardness Shore A 35–50; tolerance ±0.20 mm; process LSR injection; MOQ 1,000 pcs; lead time 16 days. Compiles with FDA 21 CFR 177.2600, LFGB §31, EU 1935/2004.
- [Food Container Seal Lid](https://silicraft.lumorb.com/products/food-container-seal-lid): Stretch lid, 200 °C oven safe. Hardness Shore A 40–55; tolerance ±0.25 mm; process LSR injection; MOQ 1,500 pcs; lead time 18 days. Compiles with FDA 21 CFR 177.2600, LFGB §31, EU 1935/2004.
- [Medical Silicone O-Ring](https://silicraft.lumorb.com/products/medical-o-ring-seal): USP Class VI, Class 8 molded. Hardness Shore A 50–70; tolerance ±0.08 mm; process LSR injection, Class 8; MOQ 1,000 pcs; lead time 20 days. Compiles with ISO 13485, USP Class VI, ISO 10993-5, FDA 21 CFR 820.
- [Respiratory Mask Cushion](https://silicraft.lumorb.com/products/respiratory-mask-cushion): Ultra-soft face seal, 20–35 Shore A. Hardness Shore A 20–35; tolerance ±0.20 mm; process LSR injection, Class 8; MOQ 500 pcs; lead time 25 days. Compiles with ISO 13485, ISO 10993-10, USP Class VI.
- [Catheter Balloon](https://silicraft.lumorb.com/products/catheter-balloon): Thin-wall, ±0.05 mm wall control. Hardness Shore A 30–50; tolerance ±0.05 mm; process LSR dip / injection, Class 8; MOQ 2,000 pcs; lead time 28 days. Compiles with ISO 13485, ISO 10993-5, USP Class VI, EN ISO 10555.
- [Medical Silicone Tourniquet](https://silicraft.lumorb.com/products/medical-silicone-tourniquet): Latex-free, autoclavable strap. Hardness Shore A 35–50; tolerance ±0.30 mm; process HCR extrusion; MOQ 1,000 pcs; lead time 20 days. Compiles with ISO 13485, ISO 10993-10, Latex free.
- [Infusion Pump Tubing](https://silicraft.lumorb.com/products/infusion-pump-tubing): DEHP-free, ±0.05 mm bore. Hardness Shore A 45–60; tolerance ±0.05 mm; process LSR extrusion; MOQ 5,000 m; lead time 24 days. Compiles with ISO 13485, USP Class VI, ISO 10993-5, DEHP free.
- [Connector Sealing Gasket](https://silicraft.lumorb.com/products/connector-sealing-gasket): IP68 face seal for circular connectors. Hardness Shore A 50–70; tolerance ±0.05 mm; process LSR injection; MOQ 2,000 pcs; lead time 18 days. Compiles with UL 94 V-0, RoHS, REACH, IP68.
- [Silicone Keyboard Membrane](https://silicraft.lumorb.com/products/silicone-keyboard-membrane): 10M-cycle key domes. Hardness Shore A 40–60; tolerance ±0.10 mm; process LSR injection; MOQ 1,000 pcs; lead time 22 days. Compiles with UL 94 V-0, RoHS, REACH, 10M cycles.
- [EV Battery Insulation Pad](https://silicraft.lumorb.com/products/ev-battery-insulation-pad): CTI 600 V, flame retardant. Hardness Shore A 40–60; tolerance ±0.20 mm; process HCR compression; MOQ 500 pcs; lead time 20 days. Compiles with UL 94 V-0, RoHS, REACH, CTI 600 V.
- [Silicone Optical Lens](https://silicraft.lumorb.com/products/led-optical-lens): UV-stable, ±0.03 mm surface. Hardness Shore A 60–80; tolerance ±0.03 mm; process LSR injection; MOQ 2,000 pcs; lead time 20 days. Compiles with UL 94 V-0, RoHS, REACH, UV stable.
- [Thermal Conductive Pad](https://silicraft.lumorb.com/products/thermal-conductive-pad): 3.0 W/m·K, soft interface. Hardness Shore A 20–50; tolerance ±0.10 mm; process HCR compression; MOQ 1,000 pcs; lead time 16 days. Compiles with UL 94 V-0, RoHS, REACH, 3.0 W/m·K.
- [Silicone Baby Pacifier](https://silicraft.lumorb.com/products/silicone-baby-pacifier): EN 14350, symmetric teat. Hardness Shore A 20–35; tolerance ±0.10 mm; process LSR injection; MOQ 2,000 pcs; lead time 20 days. Compiles with EN 14350, FDA 21 CFR 177.2600, BPA free, Phthalate free.
- [Silicone Teething Ring](https://silicraft.lumorb.com/products/silicone-teething-ring): Textured, one-piece, no fillers. Hardness Shore A 25–40; tolerance ±0.20 mm; process LSR injection; MOQ 2,000 pcs; lead time 18 days. Compiles with EN 14350, EN 71-3, BPA free, Phthalate free.
- [Breast Pump Flange](https://silicraft.lumorb.com/products/breast-pump-flange): Cushioned funnel, BPA-free. Hardness Shore A 25–40; tolerance ±0.15 mm; process LSR injection; MOQ 1,000 pcs; lead time 20 days. Compiles with EN 14350, FDA 21 CFR 177.2600, BPA free.
- [Silicone Bib](https://silicraft.lumorb.com/products/silicone-baby-bib): Crumb catcher, four neck settings. Hardness Shore A 30–45; tolerance ±0.25 mm; process LSR injection; MOQ 1,500 pcs; lead time 18 days. Compiles with EN 14350, EN 71-3, BPA free, Food contact.
- [Baby Soft Spoon](https://silicraft.lumorb.com/products/silicone-baby-soft-spoon): Rounded bowl, stubby grip. Hardness Shore A 25–40; tolerance ±0.15 mm; process LSR injection; MOQ 2,000 pcs; lead time 16 days. Compiles with EN 14350, FDA 21 CFR 177.2600, BPA free.
- [Industrial Silicone Seal Strip](https://silicraft.lumorb.com/products/industrial-silicone-seal-strip): Extruded D-profile, adhesive backed. Hardness Shore A 40–70; tolerance ±0.30 mm; process HCR extrusion; MOQ 1,000 m; lead time 18 days. Compiles with ASTM D2000, SAE J200, RoHS, UL 50E.
- [Vibration Damping Pad](https://silicraft.lumorb.com/products/vibration-damping-pad): Ribbed, 30–50 Shore A. Hardness Shore A 30–50; tolerance ±0.25 mm; process HCR compression; MOQ 1,000 pcs; lead time 20 days. Compiles with ASTM D2000, SAE J200, RoHS, REACH.
- [Silicone Rubber Keypad](https://silicraft.lumorb.com/products/silicone-rubber-keypad): 1M-cycle domes, no legends. Hardness Shore A 40–60; tolerance ±0.10 mm; process HCR compression; MOQ 1,000 pcs; lead time 22 days. Compiles with ASTM D2000, RoHS, REACH, 1M cycles.
- [Silicone Bellows](https://silicraft.lumorb.com/products/silicone-bellows): Corrugated protective boot. Hardness Shore A 45–65; tolerance ±0.30 mm; process LSR / HCR molding; MOQ 500 pcs; lead time 24 days. Compiles with ASTM D2000, SAE J200, RoHS, REACH.
- [High-Temperature Silicone Roller](https://silicraft.lumorb.com/products/high-temperature-roller): 300 °C rated, ground finish. Hardness Shore A 50–80; tolerance ±0.15 mm; process HCR molding + grinding; MOQ 100 pcs; lead time 28 days. Compiles with ASTM D2000, RoHS, REACH, MIL-SPEC.

## Technical guides

- [Silicone vs rubber: how to choose between silicone elastomer and organic rubber for a molded part](https://silicraft.lumorb.com/guide/silicone-vs-rubber): Side-by-side comparison of silicone rubber and organic elastomers (EPDM, NBR, NR, FKM) on temperature range, chemical resistance, compression set, hardness, food contact compliance and tooling cost.
- [LSR vs HTV vs HCR: choosing the right silicone molding process](https://silicraft.lumorb.com/guide/lsr-vs-htv): LSR injection, HTV compression and HCR transfer molding compared on cycle time, flash, tool cost, hardness range, part geometry and unit cost — with a per-decision recommendation.
- [FDA 21 CFR 177.2600: what the regulation actually says about silicone food-contact parts](https://silicraft.lumorb.com/guide/fda-21-cfr-177-2600): FDA 21 CFR 177.2600 in plain language: which silicone articles fall under it, the extractables limits that apply, how platinum-cured vs peroxide-cured differ, and what a buyer should ask for in a compliance file.
- [Medical-grade silicone: USP Class VI, ISO 10993 and FDA 21 CFR 211 — what each standard actually requires](https://silicraft.lumorb.com/guide/medical-grade-silicone): Plain-language reading of USP Class VI, ISO 10993 cytotoxicity / sensitization / irritation, FDA 21 CFR 211 cGMP and ISO 13485 QMS — and what to ask a silicone supplier for before you specify a medical part.
- [Silicone part tolerance: achievable tolerances by process and design rules for tight-tolerance parts](https://silicraft.lumorb.com/guide/silicone-part-tolerance): What tolerance LSR / HCR / HTV silicone parts actually hold in production, where the dimensional limits come from, and ten DFM rules to design a silicone part that does not fight its own process.
- [ISO 13485 for silicone molders: what the QMS certification actually covers and how to read the scope statement](https://silicraft.lumorb.com/guide/iso-13485-medical-molding): What ISO 13485 certification means for a silicone molder, what the scope statement should name, what an FDA / EU MDR auditor looks for, and how to verify a certificate before signing a supply agreement.

## Insights

- [Platinum-cured vs peroxide-cured silicone: which cure system fits which part](https://silicraft.lumorb.com/insights/platinum-vs-peroxide-cure): Platinum cure beats peroxide cure for medical and food-contact parts; peroxide still wins for thick-walled industrial seals. 5-minute read for buyers and engineers.
- [ISO 13485 vs FDA 21 CFR 820: two QMS standards, one shared audit](https://silicraft.lumorb.com/insights/iso-13485-vs-fda-21-cfr-820): Two QMS standards, one accepted audit, what is shared, what differs, how to read the certificate. Reference for medical device buyers and supplier QA teams.
- [Design for manufacturing with silicone: 7 rules that save a tool revision](https://silicraft.lumorb.com/insights/design-for-manufacturing-silicone): What a DFM memo from a silicone molder should catch before tool steel is cut. 7 practical rules from cutting 1,840+ molds at three plants.

## Machine-readable profile

- [company.json](https://silicraft.lumorb.com/company.json) — full company object: identity, plants, certifications, grades, catalog, metrics
- [company.json schema](https://silicraft.lumorb.com/company.schema.json) — JSON Schema (draft 2020-12) describing that object
- [company.csv](https://silicraft.lumorb.com/company.csv) — the same profile as a two-column key/value sheet for directory submission forms

## Open Knowledge Format bundle

Machine-readable knowledge bundle for AI agents: https://silicraft.lumorb.com/okf/

- [index](https://silicraft.lumorb.com/okf/index.md) — bundle map and consumption notes
- [company](https://silicraft.lumorb.com/okf/company.md) — legal entity, plants, certifications, five grades
- [capabilities](https://silicraft.lumorb.com/okf/capabilities.md) — grade matrix and process capability
- [products](https://silicraft.lumorb.com/okf/products.md) — all 25 parts with MOQ, lead time, tolerance, standards
- [process](https://silicraft.lumorb.com/okf/process.md) — seven-step project flow
- [compliance](https://silicraft.lumorb.com/okf/compliance.md) — which certificate to ask for, per grade
- [commercial](https://silicraft.lumorb.com/okf/commercial.md) — quoting model, MOQ bands, lead times, payment

## Optional

- [Home](https://silicraft.lumorb.com/): capabilities, process, certifications and company background
- [Product catalog](https://silicraft.lumorb.com/products/): all 25 part families by grade
- [Guide library](https://silicraft.lumorb.com/guide/): 6 technical guides with comparison tables
- [Insights](https://silicraft.lumorb.com/insights/): 3 engineering notes
- [For distributors](https://silicraft.lumorb.com/for-distributors): resource manifest for resellers and sourcing partners
- [Commercial terms](https://silicraft.lumorb.com/pricing.md): MOQ, lead time, tooling and quoting model
- [Imprint](https://silicraft.lumorb.com/legal/imprint): legal entity, registry and contact details
- [Terms](https://silicraft.lumorb.com/legal/terms) · [Privacy](https://silicraft.lumorb.com/legal/privacy)
- Chinese: https://silicraft.lumorb.com/zh/ · Japanese: https://silicraft.lumorb.com/ja/ · Korean: https://silicraft.lumorb.com/ko/ · Arabic: https://silicraft.lumorb.com/ar/