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HARTING NBR Rubber Seal O-Ring

HARTING NBR Rubber Seal O-Ring

RS Stock No. 016-2479

Brand HARTING

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

€ 8.79

in stock now

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HARTING NBR Rubber Seal O-Ring

HARTING NBR Rubber Seal O-Ring

RS Stock No. 016-2480

Brand HARTING

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

€ 9.41

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SKF Nitrile Rubber Seal, 88mm ID, 93mm OD, 11mm

SKF Nitrile Rubber Seal, 88mm ID, 93mm OD, 11mm

RS Stock No. 267-0375

Brand SKF

  • Brand: SKF
  • Category: Seals
  • Section: Bearings & Seals

€ 87.85

20 in stock now

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SKF Nitrile Rubber Seal, 63mm ID, 58mm OD, 9mm

SKF Nitrile Rubber Seal, 63mm ID, 58mm OD, 9mm

RS Stock No. 267-3737

Brand SKF

  • Manufacturer: SKF
  • Outside Diameter: 58mm
  • Seal Type: V Seal

€ 142.76

100 in stock now

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SKF Nitrile Rubber Seal, 40mm ID, 43mm OD, 9mm

SKF Nitrile Rubber Seal, 40mm ID, 43mm OD, 9mm

RS Stock No. 266-9206

Brand SKF

  • Manufacturer: SKF
  • Outside Diameter: 43mm
  • Seal Type: V Seal

€ 111.38

225 in stock now

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NEMIQ O-ring Nitrile Rubber

NEMIQ O-ring Nitrile Rubber

RS Stock No. 288-4371

Brand NEMIQ

  • Category: Seal & O-Ring Kits
  • Manufacturer: NEMIQ
  • Type: O-Ring

€ 33.13

29 in stock now

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RS PRO Nitrile Rubber Seal, 10mm ID, 19mm OD, 7mm

RS PRO Nitrile Rubber Seal, 10mm ID, 19mm OD, 7mm

RS Stock No. 226-3695

Brand RS Pro

  • Brand: RS Pro
  • Inside Diameter: 10mm
  • Section: Bearings & Seals

€ 12.05

110 in stock now

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RS PRO Nitrile Rubber Seal, 10mm ID, 22mm OD, 7mm

RS PRO Nitrile Rubber Seal, 10mm ID, 22mm OD, 7mm

RS Stock No. 226-3697

Brand RS Pro

  • Outside Diameter: 22mm
  • Super Section: Gaskets, Seals & Packings
  • Thickness: 7mm

€ 10.42

55 in stock now

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RS PRO Nitrile Rubber Seal, 10mm ID, 24mm OD, 7mm

RS PRO Nitrile Rubber Seal, 10mm ID, 24mm OD, 7mm

RS Stock No. 226-3698

Brand RS Pro

  • Category: Seals
  • Outside Diameter: 24mm
  • Seal Material: Nitrile Rubber

€ 10.04

10 in stock now

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RS PRO Nitrile Rubber Seal, 10mm ID, 26mm OD, 7mm

RS PRO Nitrile Rubber Seal, 10mm ID, 26mm OD, 7mm

RS Stock No. 226-3699

Brand RS Pro

  • Category: Seals
  • Manufacturer: RS Pro
  • Super Section: Gaskets, Seals & Packings

€ 11.55

55 in stock now

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RS PRO Nitrile Rubber Seal, 12mm ID, 19mm OD, 5mm

RS PRO Nitrile Rubber Seal, 12mm ID, 19mm OD, 5mm

RS Stock No. 226-3700

Brand RS Pro

  • Category: Seals
  • Manufacturer: RS Pro
  • Seal Material: Nitrile Rubber

€ 10.42

305 in stock now

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RS PRO Nitrile Rubber Seal, 12mm ID, 22mm OD, 7mm

RS PRO Nitrile Rubber Seal, 12mm ID, 22mm OD, 7mm

RS Stock No. 226-3702

Brand RS Pro

  • Outside Diameter: 22mm
  • Section: Bearings & Seals
  • Thickness: 7mm

€ 10.04

125 in stock now

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RS PRO Nitrile Rubber Seal, 12mm ID, 24mm OD, 7mm

RS PRO Nitrile Rubber Seal, 12mm ID, 24mm OD, 7mm

RS Stock No. 226-3703

Brand RS Pro

  • Manufacturer: RS Pro
  • Seal Type: Rotary Shaft Seal
  • Section: Bearings & Seals

€ 10.42

70 in stock now

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RS PRO Nitrile Rubber Seal, 12mm ID, 28mm OD, 7mm

RS PRO Nitrile Rubber Seal, 12mm ID, 28mm OD, 7mm

RS Stock No. 226-3705

Brand RS Pro

  • Brand: RS Pro
  • Manufacturer: RS Pro
  • Super Section: Gaskets, Seals & Packings

€ 11.55

Temporarily out of stock

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RS PRO Nitrile Rubber Seal, 15mm ID, 26mm OD, 7mm

RS PRO Nitrile Rubber Seal, 15mm ID, 26mm OD, 7mm

RS Stock No. 226-3712

Brand RS Pro

  • Inside Diameter: 15mm
  • Outside Diameter: 26mm
  • Seal Type: Rotary Shaft Seal

€ 11.55

140 in stock now

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RS PRO Nitrile Rubber Seal, 17mm ID, 30mm OD, 7mm

RS PRO Nitrile Rubber Seal, 17mm ID, 30mm OD, 7mm

RS Stock No. 226-3724

Brand RS Pro

  • Manufacturer: RS Pro
  • Seal Type: Rotary Shaft Seal
  • Section: Bearings & Seals

€ 11.04

Temporarily out of stock

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RS PRO Nitrile Rubber Seal, 17mm ID, 32mm OD, 7mm

RS PRO Nitrile Rubber Seal, 17mm ID, 32mm OD, 7mm

RS Stock No. 226-3725

Brand RS Pro

  • Brand: RS Pro
  • Manufacturer: RS Pro
  • Seal Material: Nitrile Rubber

€ 12.42

70 in stock now

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RS PRO Nitrile Rubber Seal, 17mm ID, 35mm OD, 7mm

RS PRO Nitrile Rubber Seal, 17mm ID, 35mm OD, 7mm

RS Stock No. 226-3726

Brand RS Pro

  • Inside Diameter: 17mm
  • Outside Diameter: 35mm
  • Section: Bearings & Seals

€ 12.30

55 in stock now

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RS PRO Nitrile Rubber Seal, 18mm ID, 32mm OD, 7mm

RS PRO Nitrile Rubber Seal, 18mm ID, 32mm OD, 7mm

RS Stock No. 226-3730

Brand RS Pro

  • Seal Type: Rotary Shaft Seal
  • Super Section: Gaskets, Seals & Packings
  • Thickness: 7mm

€ 12.42

65 in stock now

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RS PRO Nitrile Rubber Seal, 19mm ID, 30mm OD, 7mm

RS PRO Nitrile Rubber Seal, 19mm ID, 30mm OD, 7mm

RS Stock No. 226-3732

Brand RS Pro

  • Inside Diameter: 19mm
  • Outside Diameter: 30mm
  • Seal Type: Rotary Shaft Seal

€ 11.55

95 in stock now

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RS PRO Nitrile Rubber Seal, 20mm ID, 30mm OD, 7mm

RS PRO Nitrile Rubber Seal, 20mm ID, 30mm OD, 7mm

RS Stock No. 226-3737

Brand RS Pro

  • Category: Seals
  • Seal Type: Rotary Shaft Seal
  • Super Section: Gaskets, Seals & Packings

€ 11.55

80 in stock now

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RS PRO Nitrile Rubber Seal, 20mm ID, 32mm OD, 7mm

RS PRO Nitrile Rubber Seal, 20mm ID, 32mm OD, 7mm

RS Stock No. 226-3738

Brand RS Pro

  • Manufacturer: RS Pro
  • Outside Diameter: 32mm
  • Thickness: 7mm

€ 12.55

90 in stock now

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RS PRO Nitrile Rubber Seal, 20mm ID, 35mm OD, 7mm

RS PRO Nitrile Rubber Seal, 20mm ID, 35mm OD, 7mm

RS Stock No. 226-3740

Brand RS Pro

  • Category: Seals
  • Manufacturer: RS Pro
  • Seal Material: Nitrile Rubber

€ 12.42

220 in stock now

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RS PRO Nitrile Rubber Seal, 20mm ID, 38mm OD, 8mm

RS PRO Nitrile Rubber Seal, 20mm ID, 38mm OD, 8mm

RS Stock No. 226-3741

Brand RS Pro

  • Category: Seals
  • Inside Diameter: 20mm
  • Seal Type: Rotary Shaft Seal

€ 13.68

Temporarily out of stock

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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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