Products Description
Custom Molded O-Rings are specially manufactured sealing components created according to customer drawings, performance requirements, and application environments. Unlike standard catalog O-rings, custom molded O-rings allow you to define size, material, hardness, color, tolerance, and special functional treatments, ensuring perfect fit and optimal sealing for unique engineering needs.
Whether you are designing new machinery, upgrading existing equipment, or solving a specific sealing problem, custom molded O-rings provide unmatched flexibility and reliability.
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Why Choose Custom Molded O-Rings?
1. Any Size-No Limitation
We produce O-rings far beyond standard AS568 / DIN / JIS ranges:
Ultra-small micro O-rings
Oversized O-rings
Uncommon ID/CS ratios
Non-standard geometries
Precisely engineered to your specifications.
2. Full Material Customization
Select from 20+ rubber materials, depending on environment:
NBR / Buna-N – oil, fuel, hydraulic fluids
EPDM – hot water, steam, weather resistance
Silicone (VMQ) – high/low temp flexibility, FDA grade
FKM / Viton – high temperature & chemicals
HNBR – automotive, refrigerants, high durability
FFKM – extreme chemicals & heat
PU, CR, TPE, SBR, and more
Food-grade, medical-grade, and flame-retardant compounds are available.
3. Custom Hardness & Color
Hardness range: 20–90 Shore A
Colors: black, brown, red, transparent, or fully customized
Color coding available for assembly management
4. Optional Surface Treatments
PTFE low-friction spray
Silicone oil lubrication
Anti-stick coatings
Dust-proof or conductive coatings
5. Tight Tolerance & Precise Engineering
High-precision molding ensures:
Consistent dimensions across large quantities
Material Comparison Table
|
Feature / Material |
NBR |
FKM (Viton®) |
EPDM |
Silicone |
HNBR |
|
Hardness (Shore A) |
30–90 |
50–90 |
40–90 |
5–90 |
50–90 |
|
Temp Range |
-40°C ~ +120°C |
-20°C ~ +250°C |
-50°C ~ +150°C |
-60°C ~ +230°C |
-40°C ~ +150°C |
|
Key Features |
Oil/fuel/grease resistance; good mechanical properties |
Heat, chemical, oil resistance |
Weather, ozone, water, steam resistance |
Flexibility, wide temp, food-grade options |
Heat, oil, chemical resistance, aging resistance |
|
Advantages |
Affordable, versatile, good wear resistance |
Excellent high-temp and chemical resistance |
Excellent outdoor & water system performance |
Excellent low/high temp performance, food-safe |
Superior durability and mechanical properties |
|
Limitations |
Poor ozone/weather resistance |
Expensive, harder to process |
Poor oil/fuel resistance |
Low mechanical strength, expensive |
Cost higher than NBR |
|
Typical Applications |
Automotive seals, hydraulic systems, general machinery |
High-temp automotive, aerospace, chemical industry |
Plumbing, water systems, HVAC, outdoor sealing |
Food & beverage, medical, electrical insulation, extreme temp |
Automotive, industrial hydraulics, oil & gas sealing |
O Ring Applications
They provide reliable sealing performance without deformation or leakage.
Typical Applications:
Plumbing systems: Prevent water leakage in joints and pipes.
Machinery & equipment: Used for hydraulic and pneumatic sealing.
Automotive parts: Suitable for engine, fuel, and brake systems.
Home & garden tools: Replacement parts for Bunnings machinery and DIY projects.
Why Choose US ?
1.10,000+ Molds Available – Extensive mold library to meet diverse size and material requirements.
2.No MOQ, Starts from One Piece – Flexible customization from sample testing to bulk production.
3. In-Stock Inventory - Standard sizes in stock, ensuring quick shipment, Fast Global Delivery
Focus on Quality
•Precise inspection, zero-defect quality, ensuring both delivery time and quality.
•Meets the 125/1008H high-temperature aging test requirements of the new energy industry;
•Withstands commercial cleaner (Alcohols, Alkalis, Oils) test requirements.
Packing & Delivery
|
MOQ |
1 pcs |
|
Lead Time |
- In stock: Shipped within 3 days |
|
Port |
China Xiamen |
|
Shipping Methods |
Express (DHL, FedEx, UPS), Air, or Sea |
|
Sample Policy |
Samples available; customer should pay freight cost |
Qualification Certificate
Contact US：
Xiamen Best Seal Imp and Exp Co.,Ltd
Tel: +86-592-5782315
Mob: +8618950159396
Email: yunying2@bestsealhk.com
Add: Unit 522-525, Gaodian Road 6#, Huli District, Xiamen, China
Why choose us?
- We understand the value of a good Solid O-ring, which is why we only produce high-quality products.
- An excellent team can affect the atmosphere of the whole team. Therefore, our company attaches great importance to the cultivation of employees' abilities.
- Our Solid O-ring products are used in a variety of industries, including automotive, aerospace, and industrial manufacturing.
- We can develop new O Ring Molded Gasket according to the needs of the market.
- Our Solid O-ring products are backed by a solid warranty and guarantee of quality.
- By strengthening resource management, we actively practice a green and sustainable development path.
- Our Solid O-ring products have a proven track record of reliability and durability.
- Our company is a professional company, which can provide you with high-quality products and services with satisfactory results. Based on the principle of "mutual benefit, common development and customer first", we serve new and old customers with a warm working attitude.
- Our Solid O-ring products are designed to provide maximum sealing efficiency in industrial settings.
- Facing the new chance for development, the company will cooperate with friends in all circles with best quality products, promptest shipment and most competitive price as ever.
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