Nbr Rubber O Ring Seal Nitrile Buna-N O-Rings Seal Ring AS568 Standard Oring
Basic Properties
Place of Origin:
CHINA
Brand Name:
BESTSEAL
Certification:
ROHS2.0/REACH/IATF16949
Model Number:
NBR O Ring
Trading Properties
Minimum Order Quantity:
1pc
Payment Terms:
T/T,Western Union,D/P,D/A,L/C
Supply Ability:
1000000/Month
Product Summary
Nbr Rubber O Ring Seal Nitrile Buna-N O-Rings Seal Ring AS568 Standard Oring 1. Introduction to O Rings An O ring is a torus-shaped loop, typically made of elastomeric material, that functions as a mechanical gasket. When seated in a groove and compressed between two or more parts, it forms a seal ...
Product Details
Highlight:
NBR Rubber O Ring Seal
,Nitrile Buna-N O-Rings AS568
,AS568 Standard Oring Seal
Product Description
Nbr Rubber O Ring Seal Nitrile Buna-N O-Rings Seal Ring AS568 Standard Oring
1. Introduction to O Rings
An O ring is a torus-shaped loop, typically made of elastomeric material, that functions as a mechanical gasket.
When seated in a groove and compressed between two or more parts, it forms a seal at the interface. Its genius lies in its simplicity—yet its role is utterly indispensable.
O-Ring
O rings prevent the ingress of contaminants and the escape of fluids or gases under pressure, making them a keystone in fluid power systems, engines, pumps, and countless mechanical assemblies.
Despite its diminutive size, the O ring’s contribution to engineering reliability is enormous. It facilitates leak-free performance, ensures system integrity, and reduces maintenance needs.
Find the right O-Ring in three steps
Most seal jobs come down to size, chemistry, and physical properties. Work the steps in order with the handbook tools you already have here.
1,Find your size
Match the groove or the old ring to a dash number or metric size. Use the master chart for AS568 and ISO sizes, the groove charts for gland depth and width, or the calculators when you are designing from scratch.
2,Check chemical compatibility
The fluid decides which compound families survive, and temperature decides how hard that fluid works the seal. Search your media on the interactive chart, then confirm the compound can live at your min and max temperatures.
3,Match physical properties
Confirm temperature range, hardness, dynamic versus static duty, and any certification you need. Start with Shore A durometer for pressure and gap, then compare compound families and certifications.
Introduction to O Rings
An O ring is a torus-shaped loop, typically made of elastomeric material, that functions as a mechanical gasket.
When seated in a groove and compressed between two or more parts, it forms a seal at the interface. Its genius lies in its simplicity—yet its role is utterly indispensable.
O-Ring
O rings prevent the ingress of contaminants and the escape of fluids or gases under pressure, making them a keystone in fluid power systems, engines, pumps, and countless mechanical assemblies.
Despite its diminutive size, the O ring’s contribution to engineering reliability is enormous. It facilitates leak-free performance, ensures system integrity, and reduces maintenance needs.
The invention of the O ring dates back to 1937 when Danish-American machinist Niels Christensen patented the design. Initially used in automobile braking systems, its adoption quickly proliferated across industries during World War II
Nitrile (NBR)
Nitrile rubber is the workhorse of the sealing world. Resistant to oils, fuels, and many hydraulic fluids, it’s ideal for automotive and industrial applications.
NBR offers excellent tensile strength and resilience at a cost-effective price point. However, it is less suitable for use in ozone, UV, or high-temperature environments.
Quick Answers
Short, factual answers to the questions we field most.
What temperature can Nitrile (Buna-N) O-Rings handle?
Standard Nitrile (Buna-N) O-Rings work from -40°F to +250°F (-40°C to +121°C). For more heat, HNBR reaches +300°F and FKM (Viton®) reaches +400°F.
What is the AS568 O-Ring size standard?
AS568 is the SAE Aerospace standard that defines inch O-Ring sizes. Each size has a dash number (such as -214) that encodes the cross-section and inside diameter.
Which O-Ring compound is best for water and steam?
EPDM is the standard choice for water, steam, and glycol brake fluid, rated -65°F to +300°F. Never use EPDM with petroleum oils, fuels, or greases.
What O-Ring material works with fuels and high heat?
FKM (Viton®) resists fuels, oils, and many chemicals up to +400°F. Avoid it with ketones, esters, amines, and hot water or steam.
How do I measure an O-Ring?
Measure two dimensions: the inside diameter (ID) and the cross-section (CS, the cord thickness). When possible, measure the groove rather than a used ring, which can swell or take a set. We recommend Olypsys® over calipers, pi-tape, cones, and slide gauges for day-to-day identification. Full comparison: How to Measure an O-Ring. Deep dive on the app: how it works.
What makes O-Rings fail?
Most early failures are extrusion from too large a clearance gap, compression set from heat or over-squeeze, or installation damage from sharp edges and no lubrication.
BESTSEAL — Your Reliable Partner for O Ring Seal
| BESTSEAL Advantage: | |
| 15 years | Focused in O Ring Seal Production and Sales |
| 3 hours | Quotation response only takes 3 hours |
| 10 pieces | MOQ, 10 pieces can also be purchased |
| 1-2 working days | Delivery Time only takes 1-2 working days |
| real-time | Real time synchronization of production progress |
- BESTSEAL O Ring Seal
- Delivery in 1-2 Working Days
Mr. Leo
Sales Manager
- Email: info@beseals.com
- Tel: +86 13067871876
- WhatsApp: 8613067871876
-
WeChat:
beseals
RELATED PRODUCTS
-
John Crane Type 285 Dry Gas Seals Metal Bellows Mechanical Seal
John Crane Type 285 Dry Gas Seals Metal Bellows Mechanical Seal For Cryogenic Pumps Mechanical Seals Pump Seals Non-contacting seals Type 285 Gas-lubricated, Non-contacting Single Seal For Cryogenic Pumps Unique Spiral Groove Technology As the worldwide leader in spiral groove technology, John Crane ... -
John Crane Type 5611/5611Q/5611L Cartridge Elastomer Bellows Mechanical Seals
John Crane Type 5611/5611Q/5611L Single Cartridge Elastomer Bellows Seal Mechanical Seals Mechanical Seals Pump Seals Elastomer Bellows Seals Type 5611/5611Q/5611L Universal Cartridge™ Seal Family — Single Cartridge Elastomer Bellows Seal As the first truly universal cartridge seal, the modular ... -
SAF-70-QREG-304147 John Crane Cartridge Mechanical Seal for Andritz Sulzer Pumps
SAF-70-QREG-304147 John Crane Double Cartridge Mechanical Seal for Andritz Sulzer Pumps Mechanical Seals Pump Seals O-ring Pusher Seals Type SAF Double Cartridge Seal Double-acting Cartridge Seal for Heavy Equipment The SAF is a double-acting seal particularly engineered to suit pumps, screens, ... -
John Crane Type 4111 Single-use Elastomer Bellows Cartridge Mechanical Seal
John Crane Type 4111 Single-use Elastomer Bellows Cartridge Mechanical Seal Type 4111 Single-use Elastomer Bellows Cartridge Seal Suitable for DIN and ANSI pumps using aqueous solutions, engineered to simplify installation, reduce maintenance and save on overall costs. BESTSEAL — Your Reliable ...
