1mm CS EPDM FKM NBR Silicone O-Rings & Rubber Gasket Seals

Premium 1mm Cross-Section Rubber O-Rings & Gasket Seals

Keep your mechanical assemblies leak-free with these high-quality 1mm cross-section (CS1mm) O-rings and ring gaskets. Available in a variety of industry-standard rubber compounds — Black EPDM, Green FKM (Fluorocarbon/Viton-type), White Silicone (VMQ), and Red NBR (Nitrile) — these seals are engineered for reliable performance across a wide range of applications including plumbing, automotive, hydraulics, pneumatics, and general industrial or household use.

Made in Mainland China.

Material Guide

• Black EPDM: Excellent resistance to water, steam, weathering, and UV exposure. Ideal for outdoor and water-system applications.
• Green FKM (Fluorine Rubber): Outstanding chemical and heat resistance. Suited for fuel, oil, and solvent environments.
• White Silicone (VMQ): Broad temperature range tolerance. A top choice for food-grade, medical-adjacent, and high/low temperature sealing needs.
• Red NBR (Nitrile): Strong resistance to petroleum-based oils and fuels. Widely used in automotive and hydraulic systems.

Key Features

• Cross-section thickness: 1mm (CS1mm)
• Standard ring gasket shape for universal compatibility
• Multiple material options to suit specific chemical and temperature environments
• Durable rubber construction for long-lasting sealing performance
• Suitable for static and dynamic sealing applications
• Available in a wide range of inner diameters

Specifications

Common Applications

• Plumbing fittings and pipe connections
• Automotive fuel, oil, and coolant systems
• Hydraulic and pneumatic machinery
• Industrial pumps and valves
• Household appliances and water filters
• General-purpose mechanical sealing

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Frequently Asked Questions

Q: What is the difference between EPDM, FKM, VMQ, and NBR O-rings?

A: Each rubber compound is optimized for different environments. EPDM O-rings excel in water, steam, and outdoor weathering. FKM (fluorocarbon) rings handle fuels, oils, and aggressive chemicals at high temperatures. VMQ (silicone) rings perform across extreme temperature ranges and are popular in food and appliance applications. NBR (nitrile) rings are the standard choice for petroleum-based oils, fuels, and hydraulic fluids.

Q: What does CS1mm mean for O-ring sizing?

A: "CS" stands for Cross-Section. A CS1mm O-ring has a circular cross-section with a 1mm diameter, which determines how deeply it sits in a groove and how much it compresses to form a seal. Always match the CS to your groove dimensions for an effective, leak-free seal.

Q: Are these O-rings compatible with standard groove dimensions?

A: Yes. These are standard ring gaskets machined to industry-standard tolerances, making them compatible with most standard O-ring grooves designed for a 1mm cross-section. They are suitable for both static (stationary) and light dynamic (moving) sealing applications.

Q: How do I choose the right O-ring material for my application?

A: Consider the fluid or gas being sealed, the operating temperature range, and any chemical exposure. For water/steam: EPDM. For fuel/oil/chemicals: FKM. For extreme temperatures or food-contact: VMQ Silicone. For petroleum-based hydraulic systems: NBR. When in doubt, consult your system's specifications or a sealing engineer.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.