About Longrun rubber

Longrun Rubber Products Co., Ltd. was established in China in 2005. We engage in providing customers with world-class custom molded rubber products of superior quality.We provide end-to-end service with our professional team, ensuring all your unique needs are not only met but exceeded. Count on us for the expertise and problem-solving you can rely on. Our products have been widely used in multiple industries, such as automobile, mechanism, home appliances, consumer electronics, medical, food and telecommunication. They feature high abrasion resistance, high tensile strength, excellent elongation, high corrosion resistance, superior ozone and ultraviolet ray resistance, flame resistance, compression resistance, high and low temperature resistance, high insulation or conductivity, and are suitable for both dynamic and static sealing applications.
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World-Class Team
Graduates from top universities worldwide
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Advanced R&D
Self-developed
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Innovation Focus
Multiple innovative technologies

Our Products

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Rubber washers

Rubber washers

Model: Rubber washers
Parameters: 8977204526

Rubber o-rings

Rubber o-rings

Model: Rubber o-rings
Parameters: 7536982003

Rubber dampers

Rubber dampers

Model: Rubber dampers
Parameters: 0765258145

Rubber grommets

Rubber grommets

Model: Rubber grommets
Parameters: 3183557029

Rubber seals

Rubber seals

Model: Rubber seals
Parameters: 1616690100

Rubber gasket

Rubber gasket

Model: Rubber gasket
Parameters: 1376629615

Automotive-Grade EPDM Rubber Sealing Washer for High-Pressure Applications

Automotive-Grade EPDM Rubber Sealing Washer for High-Pressure Applications

Model: Rubber washers
Parameters: 390784078X

NBR Rubber Vibration Damping Washer for Machinery Isolation

NBR Rubber Vibration Damping Washer for Machinery Isolation

Model: Rubber washers
Parameters: 7125671225

Silicone Rubber Insulating Washer for Electrical Applications

Silicone Rubber Insulating Washer for Electrical Applications

Model: Rubber washers
Parameters: 5692463237

CR Neoprene Rubber Waterproof Washer for Outdoor Enclosures

CR Neoprene Rubber Waterproof Washer for Outdoor Enclosures

Model: Rubber washers
Parameters: 6763721048

SBR Rubber Cushion Washer for Impact Absorption in Packaging

SBR Rubber Cushion Washer for Impact Absorption in Packaging

Model: Rubber washers
Parameters: 9023936620

IATF 16949 Automotive Rubber Damper for OEM Shock Absorption

IATF 16949 Automotive Rubber Damper for OEM Shock Absorption

Model: Rubber dampers
Parameters: 1953059112

Oil-Resistant NBR Rubber Gasket for Automotive and Industrial Sealing

Oil-Resistant NBR Rubber Gasket for Automotive and Industrial Sealing

Model: Rubber gasket
Parameters: 5240028923

Food-Grade FDA Silicone Rubber Gasket for Sanitary Processing

Food-Grade FDA Silicone Rubber Gasket for Sanitary Processing

Model: Rubber gasket
Parameters: 2060776376

High-Temperature FKM Viton Rubber Gasket for Extreme Heat Sealing

High-Temperature FKM Viton Rubber Gasket for Extreme Heat Sealing

Model: Rubber gasket
Parameters: 7787378018

Medical-Grade Silicone Rubber Gasket for Healthcare and Medical Devices

Medical-Grade Silicone Rubber Gasket for Healthcare and Medical Devices

Model: Rubber gasket
Parameters: 9327992113

Custom Static Seal Rubber O-Rings for Industrial Applications

Custom Static Seal Rubber O-Rings for Industrial Applications

Model: Rubber o-rings
Parameters: 0239262204

Custom Dynamic Seal Rubber O-Rings for Moving Parts

Custom Dynamic Seal Rubber O-Rings for Moving Parts

Model: Rubber o-rings
Parameters: 3032518458

Custom Hydraulic Rubber O-Rings for High Pressure Systems

Custom Hydraulic Rubber O-Rings for High Pressure Systems

Model: Rubber o-rings
Parameters: 2262754934

EPDM Rubber Cable Protection Grommets for Automotive and Industrial Use

EPDM Rubber Cable Protection Grommets for Automotive and Industrial Use

Model: Rubber grommets
Parameters: 8727844714

Company Gallery

factory
factory
Rubber Molding Workshop
Rubber Molding Workshop
Rubber Molding Workshop
Rubber Molding Workshop
Silicone Molding Workshop
Silicone Molding Workshop
Silicone Injection molding workshop
Silicone Injection molding workshop
Processing Inspection Workshop
Processing Inspection Workshop
Inspection Room
Inspection Room
General Office
General Office
Molds warehouse
Molds warehouse
Molds warehouse
Molds warehouse
Finished Product Warehouse
Finished Product Warehouse

Certifications & Awards

ISO9001
ISO9001
IATF16949
IATF16949

Success Stories & Case Studies

Food/Medical/Machinery/Sanitary

Food/Medical/Machinery/Sanitary

Tensile strength ≥ 8 Mpa
Elongation at break ≥ 450％
Tear strength ≥ 35 KN/m
long lifespan，Cpk > 1.33，Defect rate < 150 ppm，Precise dimensions

Location: US 📦 Quantity: 3000k units/ per year
Automotive Rubber Parts OEM

Automotive Rubber Parts OEM

Tensile strength ≥ 7 Mpa
Elongation at break ≥ 400％
Tear strength ≥ 15 KN/m
long lifespan，Cpk > 1.33，Defect rate < 150 ppm，Precise dimensions，Rubber bonds firmly to plastic.

Location: US 📦 Quantity: 1000k units/ per year

Company & Product Videos

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Company Introduction & Factory Tour

⏱ Duration: 3:45 | 👁 Views: 15,230

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Product Demonstration - Kestrel K-1

⏱ Duration: 5:12 | 👁 Views: 28,450

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Technology Innovation Showcase

⏱ Duration: 4:30 | 👁 Views: 12,890

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Customer Testimonials & Success Stories

⏱ Duration: 6:20 | 👁 Views: 9,650

Ready to Transform Your Life?

Contact us immediately to learn how our products meet your needs.