Nylon O-Rings

China’s Trusted Manufacturer Source for High Performance PA6/PA66 Nylon O-Rings

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Description

Nylon O-rings are precision mechanical seals crafted from polyamide thermoplastic with an O-shaped profile. They function as engineered plastic seals ideal for applications requiring high strength and low friction. Unlike standard rubber seals, nylon O-rings are not vulcanized or cured but manufactured through precision CNC machining.

Nylon (Polyamide) refers to a family of engineering plastics characterized by repeating amide groups (-NHCO-) in their molecular chain. Common grades include PA6, PA66, PA11, PA12, PA46, PA610, PA612, and PA1010. Semi-aromatic types like PA6T offer enhanced thermal performance for extreme environments.

Savvy Rubber specializes in high-precision Nylon O-Rings with consistent quality and smooth finishes. Our primary grade is PA6, with PA66 available for higher-temp needs. We also support custom formulations for specialized requirements.

Specifications

  • Material: Nylon, Polyamide, PA, PA6, PA66, PA11, PA12, PA46, PA610, PA612, PA6T, PA1010
  • Continuous Temperature Range: -30°C (-22°F) to 80°C (176°F) for PA6
  • Low Operating Temperature Limit: -40°C (-40°F) for PA6
  • Short-Term Maximum Temperature: 100°C (212°F) for PA6
  • Durometer Hardness Range: Shore D 50-60
  • Standard Durometer Hardness: Shore D 55
  • Color: Natural (standard), off-white, black, blue, custom color available
  • Outline: Circle (standard), square, rectangular, custom
  • Cross Section Profile: Round (standard), square, X, D, T, custom
  • Cross Section Width (CS): 0.8 to 30 mm (0.032 to 1.181 inch)
  • Inside Diameter (ID): 0.9 to 650 mm (0.035 to 25.590 inch)
  • Standard Size: AS 568, BS 1806, ISO 3601, DIN 3771, JIS B 2401
  • Shelf Life: About 5 years
  • Compliance: RoHS, REACH, FDA (available upon request)
  • Price Level: Normal

Performance Characteristics

The table below summarises the typical performance of standard Nylon / Polyamide / PA6 O-ring across key environmental resistance, chemical compatibility, and mechanical attributes. Ratings are based on industry-standard evaluations: Excellent (recommended), Good (suitable with limitations), Fair (limited use), and Poor (not recommended).

Excellent

Good

Fair

Poor

Ratings apply to standard unfilled virgin Nylon / Polyamide / PA6. Filled or modified grades may exhibit improved mechanical properties. Always consult application-specific data for critical sealing environments.

Material Data Sheet

The following table presents the physical, mechanical, and barrier properties of our high-performance Nylon Akulon® F132 PA6 material. All test results are derived from standard testing procedures in accordance with ISO standards and specific DSM internal methods, covering tensile performance, thermal behavior, and gas permeability.

Savvy Rubber Nylon Material Data Sheet
Material Type: 100% Virgin Unfilled Nylon / Polyamide / PA6
PHYSICAL PROPERTIES TEST METHOD UNIT TEST RESULTS
Density ISO 1183 kg/m³ 1130
Viscosity Number ISO 307 cm³/g 210
Relative Solution Viscosity DSM method 3.2
Melt Viscosity (260°C) DSM method at 260°C Pa·s 1120
Transparency DSM method % 83
MECHANICAL PROPERTIES TEST METHOD UNIT TEST RESULTS
Tensile Modulus DSM Method at 50 mm/min MPa 450
Yield Stress (Parallel) ISO 527-3 MPa 32
Maximum Stress (Parallel) ISO 527-3 MPa 83
Maximum Strain (Parallel) ISO 527-3 % 350
Trousers Tear Strength (Parallel) ISO 6383-1 32
Puncture Resistance DSM Method J/m 1300
Coefficient of Static Friction ISO 8295 1.2
Coefficient of Dynamic Friction ISO 8295 1
THERMAL PROPERTIES TEST METHOD UNIT TEST RESULTS
Linear Thermal Expansion Coeff. (Parallel) ISO 11359-1/-2 10-4 /°C 0.9
Specific Heat Capacity (20-150°C avg.) J/(kg·K) 1550
CHEMICAL & OTHER TEST METHOD UNIT TEST RESULTS
Oxygen Transmission Rate (23°C/0%RH) DIS 15105-1/-2 cm³/(m²·d·bar) 26
Oxygen Transmission Rate (23°C/85%RH) DIS 15105-1/-2 cm³/(m²·d·bar) 38
Water Vapor Transmission Rate (23°C/85%RH) DIS 15106-1/-3 g/(m²·d) 35

This Material Data Sheet (MDS) provides typical test results for our standard virgin unfilled Nylon / Polyamide / PA6 plastic. Actual performance may vary by conditions, exposure, and application. For critical applications, we recommend sample testing.

Features

Nylon O-rings deliver outstanding wear resistance and reliable performance in oil-lubricated environments. They offer good resistance to mild alkalis, salts, and organic solvents, along with high tensile strength and ease of installation into standard grooves, thereby reducing assembly time and maintenance costs.

PA / Nylon O-rings are not suitable for continuous use above 80°C or exposure to strong acids, strong oxidizing agents, and hot water or steam. Their compression set performance is moderate, meaning they may lose sealing force under prolonged static load. For very high-pressure dynamic seals or critical aging-sensitive environments, alternative materials such as FKM or EPDM are often recommended.

To address specific needs for higher wear resistance, lower creep, and greater dimensional stability, we also provide specialized filled Nylon compounds reinforced with carbon fiber, glass fiber, graphite, bronze, or molybdenum disulfide.

Applications

Polyamide / Nylon O-rings serve automotive fuel injection lines, oil filters, and transmission assemblies by providing durable sealing under constant vibration. They excel in industrial hydraulic cylinders, gear pumps, and pneumatic valves, where low friction, high wear resistance, and cost-effectiveness are key priorities in oil-lubricated systems. Nylon O-rings are also suitable for electrical connector seals, sensor housings, household appliances, and agricultural machinery that operate without exposure to high temperatures, strong acids, or high-pressure dynamic loads.

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