#1 Silicone Strips Manufacturer & Custom Supplier Since 2008

ZSR extrudes custom silicone strips — solid, foam, sponge and adhesive-backed — plus U/P/E profiles and round cord, in high-temperature, fire-retardant, food and medical grades. From prototypes to kilometer-length runs, with global shipping.

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FDA 21 CFR 177.2600ISO 9001:2015USP Class VILow MOQ30+ Countries Shipped

Custom Silicone Strips — Built to Your Exact Specification

Whatever the profile, density, adhesive or environment, ZSR extrudes silicone strips to your drawing or sample. Explore our most-requested categories:

By Type

Solid Silicone Rubber Strips

Square and rectangular profiles from 1×1 mm to 100×25 mm, any length, on spools or cut pieces.

Solid Silicone Strips

Silicone Foam & Sponge Strips

Closed-cell foam and medium-density sponge for soft sealing and vibration isolation.

Foam & Sponge Strips

Adhesive Backed Silicone Strips

3M or custom PSA laminated on the strip, with release liner for easy on-site installation.

Adhesive Backed Strips

Profile Strips & Round Cord

U-channel, P-profile, E-profile extrusions and round silicone cord, any custom die shape.

Profile Strips & Round Cord

By Special Function

High-Temperature Silicone Strips

Up to +300°C continuous for oven doors, kilns and heat-treatment equipment seals.

High-Temperature Strips

Fire Retardant Silicone Strips

UL 94 V-0 rated compounds for rail, aerospace and electrical enclosure applications.

Fire Retardant Strips

Closed-Cell Foam Strips

Water-tight, dust-tight sealing with excellent compression set resistance.

Closed-Cell Foam Strips

Silicone Strips - Weatherproof UV Resistant

Weatherproof / UV Resistant Strips

10+ year outdoor life for glazing, curtain wall and door seals. No cracking or fading.

Weatherproof Strips

By Grade

Industrial Grade Silicone Strips

Cost-effective VMQ extrusions for machinery, enclosures and general sealing.

Industrial Grade Strips

FDA Food Grade Silicone Strips

FDA 21 CFR 177.2600 compliant strips for food equipment and processing lines.

Food Grade Strips

Medical Grade Silicone Strips

USP Class VI / ISO 10993 biocompatible strips for medical devices and pharma.

Medical Grade Strips

Silicone Strips for Every Industry

From curtain-wall glazing to bakery ovens — ZSR silicone strips seal, cushion and insulate in 30+ countries.

Industry	Typical Applications	Recommended Strip
Door & Window / Glazing	Frame gaskets, weather seals, curtain walls	Weatherproof solid / profile strips
Oven & Industrial Equipment	Oven door seals, furnace edge seals	High-temperature strips
Automotive	Door seals, lighting gaskets, NVH damping	Closed-cell foam / solid strips
Construction & Facade	Expansion joints, precast panel seals	Weatherproof / fire-retardant strips
Food Equipment	Chamber seals, conveyor gaskets	FDA food grade strips
Electrical Enclosures	Cabinet door sealing, IP-rated gaskets	Closed-cell foam / adhesive strips

Silicone Strip Technical Specifications

Extrusion capability ranges. Custom die tooling available for any profile not listed here.

Parameter	Specification Range	Test Standard
Material	VMQ (standard silicone), FVMQ (fluorosilicone), foam / sponge compounds	ASTM D2000 / SAE J200
Hardness	Shore A 30 – 80 (solid); Shore OO 20 – 60 (foam)	ASTM D2240
Profile Width	1 mm – 150 mm	ISO 3302 (tolerance E1/M1/M2)
Profile Height	1 mm – 40 mm	ISO 3302
Length	Cut pieces to 50 m continuous coils	—
Operating Temperature	-60°C ~ +200°C (standard); up to +300°C (special grades)	ASTM D573
Compression Set	≤ 30% (22h @ 175°C, typical)	ASTM D395
Flammability	UL 94 V-0 / HB available	UL 94
Food Contact	FDA 21 CFR 177.2600; LFGB / EU 10/2011	COA available
Medical	USP Class VI; ISO 10993	COA available
Adhesive	3M, tesa or custom PSA with release liner	Peel strength report
Color	Black, white, red, grey, translucent, Pantone match	—

Silicone vs EPDM vs PVC Strips — Which Should You Choose?

Three materials dominate the sealing strip market. Here is how they compare:

Property	Silicone (VMQ)	EPDM	PVC
Temperature Range	-60°C ~ +200°C (300°C special)	-40°C ~ +150°C	-20°C ~ +70°C
UV / Weathering	Excellent	Excellent	Fair (cracks over time)
Food Contact	FDA / LFGB	Not typical	Not typical
Flexibility at Low Temp	Excellent	Good	Poor
Compression Set	Low	Medium	High
Service Life Outdoors	10+ years	10+ years	3–5 years
Price	Medium	Low	Lowest
Best For	High/low temp, food, medical, long life	Outdoor water sealing on a budget	Indoor, short-term, cost-driven

Not sure which fits? Send us your application — our engineers reply within 24h.

How to Order Custom Silicone Strips — 4 Simple Steps

From drawing to delivery, most orders complete in 7–15 days.

Send Your Requirements

Upload .STEP / .DWG / .PDF drawings, a photo with dimensions, or a physical sample.

Quote & DFM Review (24h)

Engineers check manufacturability, suggest material and tolerance improvements.

Sample & Production

Strip samples from existing dies in 2–3 days; custom extrusion tooling in 7–10 days (mold design & making).

Inspection & Shipment

100% dimensional check on first article; COA and test reports included.

Certifications & Quality Control

Every batch tested for hardness, tensile strength, compression set and dimensions before shipment.

FDA 21 CFR 177.2600 USP Class VI ISO 9001:2015 ISO 10993 RoHS / REACH UL 94 ASTM D2000 Line Callout

QC flow: Incoming material inspection → In-process QC → Final inspection → COA & packaging. Full reports available on request. View all ZSR certifications →

SINCE 2007

Your Trusted Partner for Custom Silicone Parts

Z.S.R Group is a leading custom silicone parts manufacturer and one-stop molding solution provider founded in 2007. We partner with brand owners, product managers, and engineers across the industrial, medical, and consumer goods sectors.

With strong manufacturing capabilities—including 38 compression molding machines, 12 LSR injection molding machines, 12 multi-color production lines, and advanced surface finishing—we ensure maximum flexibility, high precision, and easy scalability for your projects. We specialize in turning your drawings into precision parts with custom packaging, having successfully delivered over 15,000 projects worldwide.

At Z.S.R, we are fully committed to quality, compliance, and confidentiality. All our products meet global safety standards like FDA and LFGB, and we strictly protect your custom designs through Non-Disclosure Agreements (NDA).

We don’t just manufacture silicone parts—we engineer reliable, market-ready solutions from your first idea to mass production.

Learn More

Frequently Asked Questions — Silicone Strips

Quick answers to the questions engineers ask us most.

What profile sizes can you extrude?

Solid strips from 1×1 mm up to 100×25 mm, and custom U/P/E profiles or round cord from 1 mm diameter. Custom die tooling takes 7–10 days.

Can silicone strips handle outdoor weather?

Yes. VMQ silicone resists UV, ozone and rain for 10+ years outdoors — far longer than PVC, which cracks and fades within 3–5 years.

Do you supply strips with adhesive backing?

Yes. We laminate 3M, tesa or custom acrylic PSA with a release liner, ideal for retrofit sealing on site.

What is the maximum operating temperature?

Standard grades run to +200°C continuous; our high-temperature compounds reach +300°C for oven and furnace seals.

What is the MOQ for custom profiles?

Existing dies: 100 m. New custom die: 500 m (die cost refunded against 3,000 m+ orders).

How long is production lead time?

Samples from existing dies in 2–3 days. Production: 7–12 days depending on profile and quantity.

Are your silicone strips food grade?

Yes, food grade strips comply with FDA 21 CFR 177.2600 and LFGB / EU 10/2011. COA provided per batch.

Can you join strips into gaskets?

Yes. We vulcanize-mold strip ends into endless O-rings and frame gaskets, or supply corner-molded frames for doors and enclosures.

Ready to Get Your Custom Silicone Strips?

From 100 m samples to kilometer-length production runs — ZSR delivers certified silicone strips on time.

Get a Free Quote in 24h [email protected]

Also explore: Custom Silicone Pads · Custom Silicone O-Rings

#1 Silicone Strips Manufacturer & Custom Supplier Since 2008