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SKF Rubber Rubber Seal O-Ring

SKF Rubber Rubber Seal O-Ring

RS Stock No. 030-8866

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 104.17

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HARTING Nitrile Rubber (NBR) Rubber Seal O-Ring

HARTING Nitrile Rubber (NBR) Rubber Seal O-Ring

RS Stock No. 016-2479

Brand HARTING

  • Manufacturer: Harting
  • Material: NBR
  • Super Section: Gaskets, Seals & Packings

€ 13.55

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Parker Nitrile Rubber (NBR) Rubber Seal O-Ring

Parker Nitrile Rubber (NBR) Rubber Seal O-Ring

RS Stock No. 281-2654

Brand Parker

  • Brand: Parker
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 65.89

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HARTING Nitrile Rubber (NBR) Rubber Seal O-Ring

HARTING Nitrile Rubber (NBR) Rubber Seal O-Ring

RS Stock No. 016-2480

Brand HARTING

  • Brand: HARTING
  • Manufacturer: Harting
  • Type: Rubber Seal

€ 14.43

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ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 43 mm ID, 55 mm OD

ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 43 mm ID, 55 mm OD

RS Stock No. 019-0913

Brand ifm electronic

  • Brand: ifm electronic
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 34.14

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ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 13.5 mm ID, 16 mm OD

ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 13.5 mm ID, 16 mm OD

RS Stock No. 019-0902

Brand ifm electronic

  • Brand: ifm electronic
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 11.80

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ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 26.5 mm ID, 32.1 mm OD

ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 26.5 mm ID, 32.1 mm OD

RS Stock No. 019-0915

Brand ifm electronic

  • Brand: ifm electronic
  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals

€ 8.28

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ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 26.5 mm ID, 33 mm OD

ifm electronic Nitrile Rubber (NBR) Rubber Seal Seal, 26.5 mm ID, 33 mm OD

RS Stock No. 019-1081

Brand ifm electronic

  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 27.23

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SKF Nickel, Rubber Rubber Seal O-Ring, 31.5 mm ID

SKF Nickel, Rubber Rubber Seal O-Ring, 31.5 mm ID

RS Stock No. 030-8839

Brand SKF

  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 85.97

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Parker Nitrile Rubber (NBR) Rubber Seal O-Ring, 35 mm ID

Parker Nitrile Rubber (NBR) Rubber Seal O-Ring, 35 mm ID

RS Stock No. 281-2653

Brand Parker

  • Brand: Parker
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 173.19

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Parker Fluorelastomer Rubber Seal Seal Kit, 11.6 mm ID

Parker Fluorelastomer Rubber Seal Seal Kit, 11.6 mm ID

RS Stock No. 279-8339

Brand Parker

  • Brand: Parker
  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals

€ 352.66

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Parker Nitrile Rubber (NBR) Rubber Seal O-Ring, 28 mm ID

Parker Nitrile Rubber (NBR) Rubber Seal O-Ring, 28 mm ID

RS Stock No. 281-2651

Brand Parker

  • Brand: Parker
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 136.80

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8875

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 116.72

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8879

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 214.61

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8844

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals

€ 85.97

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8847

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals

€ 85.97

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8853

Brand SKF

  • Brand: SKF
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 87.85

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8857

Brand SKF

  • Brand: SKF
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 89.73

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8861

Brand SKF

  • Brand: SKF
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 104.17

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SKF Rubber Seal O-Ring

SKF Rubber Seal O-Ring

RS Stock No. 030-8870

Brand SKF

  • Brand: SKF
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 112.95

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Freudenberg Sealing Technologies Simrit Acrylonitrile Butadiene Rubber Seal, 25 mm ID, 37 mm OD

Freudenberg Sealing Technologies Simrit Acrylonitrile Butadiene Rubber Seal, 25 mm ID, 37 mm OD

RS Stock No. 828-9217

Brand Freudenberg Sealing Technologies Simrit

  • Category: Seals
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 15.94

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ifm electronic Centellen Rubber Seal Seal, 17 mm ID, 24 mm OD

ifm electronic Centellen Rubber Seal Seal, 17 mm ID, 24 mm OD

RS Stock No. 018-8805

Brand ifm electronic

  • Category: Gaskets & O-Rings
  • Section: Bearings & Seals
  • Super Section: Gaskets, Seals & Packings

€ 11.04

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ifm electronic Centellen Rubber Seal Seal, 23.5 mm ID, 30 mm OD

ifm electronic Centellen Rubber Seal Seal, 23.5 mm ID, 30 mm OD

RS Stock No. 019-0972

Brand ifm electronic

  • Brand: ifm electronic
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 17.19

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ifm electronic Centellen Rubber Seal Seal, 29.5 mm ID, 38 mm OD

ifm electronic Centellen Rubber Seal Seal, 29.5 mm ID, 38 mm OD

RS Stock No. 019-1076

Brand ifm electronic

  • Brand: ifm electronic
  • Category: Gaskets & O-Rings
  • Super Section: Gaskets, Seals & Packings

€ 17.19

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...

What is a rubber seal?
A rubber seal is an elastomeric component designed to fill the gap between two mating surfaces and prevent the passage of liquids, gases, dust, or contaminants. Rubber seals come in many shapes and forms, including O-rings, lip seals, oil seals, gaskets, and custom molded profiles. They work by creating a tight line contact that deforms under pressure, producing a sealant barrier that resists leakage in horizontal, vertical, and dynamic motion applications. Key benefits include durable compression under load, resistance to environmental factors, and compatibility with a broad range of fluids and media. Because rubber seals are made from different polymers, they can be tailored for static seals (fixed assemblies) or dynamic seals (rotating or reciprocating joints) across industries from automotive to hydraulics, pneumatic systems, and industrial machinery.
  • Prevents fluid or gas leaks
  • Maintains pressure and efficiency in systems
  • Compensates for small misalignments or surface irregularities
  • Resists wear, temperature changes, and chemical exposure when selected correctly
When selecting a rubber seal, engineers consider material type, hardness (durometer), size tolerances, installation method, and service environment to ensure a reliable seal over the product lifecycle.

What are the common materials used for rubber seals?
Rubber seals are produced from a range of elastomer polymers, each chosen for specific chemical resistance, temperature tolerance, and physical properties. The most widely used materials include:
  • EPDM (ethylene propylene diene monomer) — excellent water and steam resistance, common in HVAC and automotive cooling systems
  • Nitrile/NBR — good oil and fuel resistance, widely used in automotive, hydraulic, and industrial seals
  • Silicone — broad temperature range, suitable for food contact and sanitary environments
  • FKM/Viton — high chemical resistance to fuels and solvents, ideal for harsh chemical and high-temperature applications
  • Neoprene/CR — versatility, good weathering and ozone resistance, common in outdoor and marine seals
  • HNBR — improved oil resistance and heat resistance over standard NBR
  • Fluorosilicone — combines silicone's temperature range with fluorinated oil resistance for specialized fluids
In practice, engineers select a material based on the media, temperature range, exposure to UV/ozone, and mechanical demands such as movement or static sealing. For medical, food-grade, or pharmaceutical equipment, food-safe grades and certifications (FDA/USP and 3-A Sanitary) may drive material choice.

What are the main types of rubber seals used in industry?
Rubber seals fall into several broad categories, each serving different sealing requirements:
  • O-rings — circular cross-section seals used in static and dynamic joints; simple, versatile, and available in many materials
  • Lip seals — axial or radial seals with a sealing lip designed to retain lubricants and exclude contaminants in rotating shafts
  • Oil and hydraulic seals — specially shaped to handle pressure and lubricant compatibility in pumps and actuators
  • Gaskets — flat seals used between mating surfaces to prevent leakage in flanged and gasketed joints
  • Dynamic seals — designed to seal moving parts such as shafts or pistons, requiring good wear resistance and low friction
  • Static seals — maintain a seal without movement, relying on material resilience and surface finish
  • Specialty seals — medical-grade, food-grade, or high-temperature variants for niche applications
Each type combines with a material choice to meet specific chemical, temperature, and pressure requirements, ensuring long service life in pumps, valves, housings, and manifolds.

How do I choose the right rubber seal for a particular application?
Selecting the correct rubber seal starts with understanding the operating environment and service demands. Consider these key factors:
  • — identify the liquid, gas, or solvent, and choose a material with proven resistance to it (oil, water, fuels, acids, alkaline solutions, solvents, detergents).
  • Temperature range — ensure the material remains elastic and does not crack or extrude at the operating temperatures.
  • Pressure and speed — dynamic seals in high-pressure systems require higher durometer and tougher wear resistance.
  • Chemical exposure — exposure to ozone, UV, or weathering may favor neoprene or fluorinated elastomers.
  • Movement and alignment — dynamic seals must tolerate shaft wear and misalignment, while static seals rely on surface finish and seating accuracy.
  • Mechanical properties — durometer (Shore hardness), compression set, and elasticity affect long-term seal integrity.
  • — for food, medical, or pharmaceutical lines, compliance (FDA, 3-A, USP) may dictate material choices
Once these factors are defined, you can narrow to specific product lines, such as NBR-based oil seals for hydraulic pumps or EPDM seals for water and steam lines. Always verify compatibility with cold seals, hot torque conditions, and operating pressures to minimize leaks and downtime.

How do rubber seals perform under different temperatures and chemicals?
Material performance varies with temperature and chemical exposure. Typical guidance includes:
  • — excellent oil resistance; good for mid-range temperatures but can harden or swell with certain solvents
  • — outstanding water and steam resistance; performs well incool to moderate high temperatures, but not compatible with petroleum-based fluids
  • — wide temperature tolerance (low to very high temperatures); good chemical inertness for many foods and medical devices, but may have higher permeability
  • — superior chemical resistance to fuels, solvents, and high temperatures; ideal for aggressive media
  • — versatile but moderate chemical resistance; good for weather and ozone exposure
Understanding a material’s chemical compatibility charts and temperature limits helps prevent swelling, hardening, or o-ring nibble under load. For critical service, run compatibility tests and consider multi-material seals or coatings to extend life in harsh environments.

How do you install or maintain rubber seals in machinery?
Proper installation and maintenance extend seal life and prevent leaks. Consider these practical steps:
  • Inspect surfaces for nicks, scratches, or burrs; repair or replace damaged flanges and housings
  • Choose the correct cross-section and inner diameter; verify tolerances against the shaft, bore, or gland
  • Lubricate where appropriate with silicone-based or manufacturer-approved lubricants to reduce installation friction
  • Avoid excessive compression; follow recommended seating torque and assembly procedures
  • Protect seals during assembly from sharp edges, debris, and contamination
  • Implement routine checks for leaks, compression set, and wear; replace seals showing degradation
Regular maintenance includes cleaning, inspecting for aging and UV exposure, and using fresh lubricants appropriate to the seal material and media. In high-speed or high-pressure systems, consider protective coatings or multi-seal arrangements to reduce wear and extend service life.

What are common issues with rubber seals and how can I troubleshoot?
Common problems include leaks due to improper sizing, excessive compression, extrusion, chemical attack, aging, and surface damage. Troubleshooting tips:
  • Check seal sizing and seating clearances; ensure the cross-section matches the gland design
  • Inspect for compression set or hardening; replace with a more suitable material or durometer if needed
  • Look for chemical attack signs such as swelling, softening, or surface cracking
  • Assess surface finish of mating parts; rough or damaged surfaces can prevent proper sealing
  • Perform leak-rate testing or pressure-decay tests to pinpoint leakage points
If issues persist, review media compatibility, temperature fluctuations, and the seal’s service life; consider redesign or switching to a different polymer grade better suited to the operating conditions.

Do rubber seals meet industry standards and certifications?
Yes, many rubber seals are manufactured to meet industry standards and regulatory requirements to support quality and safety:
  • materials compatible with contact with consumables (FDA-compliant silicones, EPDM used in food processing equipment)
  • grades with USP or ISO certifications for cleanroom and sterile applications
  • seals designed for high temperature, pressure, and environmental exposure
  • seals tested for compatibility with hydraulic fluids, lubricants, coolants, and coolants under various temperatures
  • compliance to minimize hazardous substances in components
Always verify supplier documentation, material certificates, and performance data sheets to ensure the seal choice aligns with project-spec requirements and regulatory expectations.

Can I get custom rubber seals or molded seal solutions?
Custom rubber seals are common in RS Components applications where standard offerings do not precisely fit the gland or housing geometry. Custom solutions may include:
  • Molded seals with tailored cross-sections, profiles, and durometers to match complex geometries
  • O-ring and quad-ring assemblies in specific or multi-material configurations
  • Coated seals or bonded seals for improved chemical resistance or improved lubrication retention
  • Soft-touch designs for reduced shaft wear and improved lubrication
Lead times depend on volume, material, and cure processes; collaboration with RS Components technical support helps specify material grade, certification, and inspection criteria to ensure consistent performance in production environments.

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