Nitrile O-Ring — High-Performance Nitrile Seals by Polypac
Nitrile O-Ring Solutions from Polypac
High Quality Nitrile O-Ring Overview
Polypac offers precision-manufactured Nitrile O-Ring (NBR) components engineered for oil, fuel and hydraulic applications. Our Nitrile O-Rings combine excellent resistance to petroleum-based fluids, strong mechanical properties and cost-effective performance—making them ideal for static and dynamic sealing across industrial, automotive and hydraulic systems.
Material Performance & Benefits
Nitrile O-Ring (NBR) material delivers a balanced profile: superior resistance to oils and fuels, good abrasion resistance, and reliable compression set behavior. Polypac selects compound formulations to optimize hardness, temperature range and chemical compatibility to match your operating environment, ensuring long service life and reduced maintenance costs.
Advanced Manufacturing & Quality Control
With a 10,000+ m2 facility and 8,000 m2 dedicated factory space, Polypac employs industry-leading molding and testing equipment to produce Nitrile O-Rings to strict tolerances. Our process control, inline inspection and laboratory testing follow rigorous standards so each Nitrile O-Ring meets dimensional, durometer and leakage requirements.
Wide Range of Applications
Nitrile O-Rings from Polypac are widely used in hydraulic cylinders, oil seals, pumps, compressors and fuel systems. Their compatibility with NBR, NBR blends and reinforced compounds allows deployment in mobile hydraulics, industrial machinery and consumer equipment where oil resistance and mechanical strength are critical.
Custom Solutions & Collaborative R&D
Founded in 2008 and expanding from filled PTFE products to a full elastomer suite, Polypac partners with universities and research institutes to develop customized Nitrile O-Ring compounds and special geometries for challenging conditions. We provide prototyping, small-batch tooling and volume production to meet fast-turn and high-volume needs.
Why Choose Polypac
Choose Polypac for proven expertise, stringent quality control and tailored sealing solutions. Contact us to specify Nitrile O-Ring dimensions, durometer and compound — and get support from a leading hydraulic seal and oil seal manufacturer dedicated to performance and reliability.
Nitrile O-Ring Display
How can I prevent seal damage during installation?
Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.
How do I choose the right material for my sealing application?
Material selection depends on four key factors: Media: What fluid or gas will the seal contact? (e.g., petroleum oil, water, chemicals, steam) Temperature: What is the minimum and maximum operating temperature? Pressure: What is the system's operating pressure? Are there pressure spikes? Application: Is it a static, dynamic, or rotary seal? Example: NBR (Buna-N) is excellent for standard hydraulic oil, while FKM (Viton®) is needed for high temperatures or aggressive chemicals.
Why did my O-ring fail prematurely?
Common causes of O-ring failure include: Chemical Incompatibility: Swelling, softening, or cracking due to fluid exposure. Improper Sizing: Using an incorrect size leads to over-compression or inadequate sealing force. Abrasion: Wear and tear from rough surface finishes or contaminated fluid. Extrusion: The seal is forced into the gap between metal parts under high pressure. Installation Damage: Nicks, cuts, or twists during assembly.
What does "AS568" mean?
AS568 is the Aerospace Standard that defines the dimensions for over 360 standard O-ring sizes. It is the most widely accepted sizing system in North America and globally. An AS568 number (e.g., AS568-214) specifies a precise inside diameter and cross-section.
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Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
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AS568 Standard O-Ring Kits-006 CAT-GM | SAE Dash Size Assortments for Hydraulics & Pneumatics
Plumbing & HVAC O-Ring Kits012 HITACHI | Assortments for Water, Refrigerant & Gas Connections
Plumbing & HVAC O-Ring Kits012 HITACHI | Assortments for Water, Refrigerant & Gas Connections
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Mini O-Ring Kits-011 SUMITOM | Compact Assortments for Electronics, RC Models & Small Appliances
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FKM O-Ring Kits | High-Temp & Chemical Resistant Seal Assortments
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Buna-N (Nitrile) O-Ring Kits-008 KOMATSU | Oil Resistant Seal Assortments for General Purpose Use
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Metric O-Ring Kits-007 CAT-A | Precision Sized Assortments for European & Asian Machinery
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