Silicone Gaskets: Food-Safe, High-Temp & Flexible

Silicone gaskets deliver a rare combination of wide temperature range, food and medical safety, and long-term flexibility—making them the default for ovens, medical devices, food lines, and electronics. At Anlintech we fabricate silicone gaskets by molding, die-cutting, and extrusion-splicing in solid, sponge, and fluorosilicone grades, to your flange and profile. Compare materials in our silicone vs rubber gaskets guide.

Silicone Gasket Types

• Die-cut sheet gaskets – economical flat seals from silicone sheet.
• Molded gaskets – complex 2D/3D profiles and O-ring cross-sections.
• Sponge silicone gaskets – low-closure-force seals for doors and enclosures.
• Extruded & spliced frames – continuous profiles joined into closed loops.
• Fluorosilicone (FVMQ) – silicone flexibility with fuel/oil resistance.

Material Selection

Compliance follows FDA, ISO, and ASTM references; we supply FDA, USP Class VI, and 3-A grades for regulated lines.

How to Choose a Silicone Gasket

1. Define media (steam, food, fuel, chemical) and temperature.
2. Pick grade: VMQ for general, FVMQ for oil/fuel.
3. Choose form: die-cut, molded, or sponge/spliced frame.
4. Set durometer (typically 30–70 Shore A) and color.
5. Confirm compliance (FDA, 3-A, USP Class VI, UL 94).

For full silicone properties, see our silicone rubber complete guide, custom silicone parts guide, and why choose silicone.

Typical Applications

• Food & beverage – sanitary gaskets (see FDA/3-A seals).
• Medical & lab – autoclave and device seals (see medical silicone).
• Ovens & appliances – high-temp door gaskets.
• Electronics – IP-rated seals (see IP67/IP68).

Manufacturing

We compression- and injection-mold silicone, die-cut sheet, and splice extruded frames—see compression vs injection molding. Related parts are on our silicone rubber parts and rubber gaskets pages.

Frequently Asked Questions

Are silicone gaskets food safe?

Yes. VMQ silicone is available in FDA and 3-A grades for direct food and beverage contact, and in USP Class VI for medical use.

What temperature can silicone gaskets handle?

Standard silicone serves about -60°C to +230°C; fluorosilicone extends chemical resistance while keeping broad temperature capability.

Silicone vs rubber gasket—which is better?

Silicone wins on temperature, food/medical safety, and weather; EPDM/NBR/FKM win on oil, fuel, and chemical resistance and often cost less. See our comparison.

Can silicone gaskets be made as closed frames?

Yes. Extruded silicone profiles are vulcanized or hot-air spliced into frames with joints matched to the parent section.

Get a Quote

Send your drawing or sample with grade and compliance needs. Request a silicone gasket quote → or see our FAQ. Back to custom rubber parts.