Get the Right O-Ring Fast. Eliminate Downtime.
When your equipment is down, you do not have time to hunt for individual seals. The K460X37AN6227 OSK™ O-Ring Kit gives you immediate access to 37 of the most popular AN6227 and AS568 conforming sizes in one organized, ready-to-use kit. Built with reliable Buna-N (NBR) 70 durometer material in standard black, this kit delivers dependable sealing performance for hydraulic, pneumatic, fuel, and general industrial applications.
Designed for maintenance departments, service trucks, aviation support, repair facilities, and industrial technicians, this 460 piece kit keeps the right size at your fingertips. That means faster repairs, fewer delays, and less equipment downtime.
Operating Temperature: -40° to +225°F (–40° to +107°C)
Material & Performance Details
This kit contains Buna-N (Nitrile, NBR) 70 durometer O-Rings in black. Nitrile is a copolymer of butadiene and acrylonitrile and remains the most widely used elastomer in sealing due to its excellent balance of performance and cost.
Performance strengths:
- Excellent resistance to petroleum-based oils and fuels
- Strong tensile and abrasion resistance
- Reliable compression set characteristics
- Good performance in water and dilute acid environments
- Excellent for hydraulic and pneumatic sealing
Excellent resistance to:
- Petroleum oils and lubricants
- Hydrocarbon fuels and gasoline
- Hydraulic fluids
- L.P. gases
- Silicone oils and greases
- Di-ester base lubricants (MIL-L-7808)
- Ethylene glycol base fluids
- Cold water applications
Limited capability with:
- Most dilute acids
- Water under moderate temperature conditions
Not compatible with:
- Ketones (MEK, acetone)
- Aromatic hydrocarbons
- Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul)
- Halogenated hydrocarbons
- Nitro hydrocarbons
- Ozone and UV exposure
- Automotive brake fluid
- Strong acids
More than half of industrial O-Ring usage worldwide relies on Nitrile because it performs consistently in oil and fuel environments.
Complete O-Ring Size List
K460X37AN6227 OSK™ Buna-N 70 Durometer AN6227 O-Ring Kit
460 Pieces | 37 Sizes
Conforms dimensionally to AS568 and AN6227
1/16" CS (0.0625" | 1.59 mm)
- -006 | AN6227-1 | 1/16" CS (1.59 mm) | 1/8" ID (3.18 mm) | 1/4" OD (6.35 mm) | 20 pcs
- -007 | AN6227-2 | 1/16" CS (1.59 mm) | 5/32" ID (3.97 mm) | 9/32" OD (7.14 mm) | 20 pcs
- -008 | AN6227-3 | 1/16" CS (1.59 mm) | 3/16" ID (4.76 mm) | 5/16" OD (7.94 mm) | 20 pcs
- -009 | AN6227-4 | 1/16" CS (1.59 mm) | 7/32" ID (5.56 mm) | 11/32" OD (8.73 mm) | 20 pcs
- -010 | AN6227-5 | 1/16" CS (1.59 mm) | 1/4" ID (6.35 mm) | 3/8" OD (9.53 mm) | 20 pcs
- -011 | AN6227-6 | 1/16" CS (1.59 mm) | 5/16" ID (7.94 mm) | 7/16" OD (11.11 mm) | 20 pcs
- -012 | AN6227-7 | 1/16" CS (1.59 mm) | 3/8" ID (9.53 mm) | 1/2" OD (12.70 mm) | 20 pcs
3/32" CS (0.09375" | 2.38 mm)
- -110 | AN6227-8 | 3/32" CS (2.38 mm) | 3/8" ID (9.53 mm) | 9/16" OD (14.29 mm) | 20 pcs
- -111 | AN6227-9 | 3/32" CS (2.38 mm) | 7/16" ID (11.11 mm) | 5/8" OD (15.88 mm) | 20 pcs
- -112 | AN6227-10 | 3/32" CS (2.38 mm) | 1/2" ID (12.70 mm) | 11/16" OD (17.46 mm) | 20 pcs
- -113 | AN6227-11 | 3/32" CS (2.38 mm) | 9/16" ID (14.29 mm) | 3/4" OD (19.05 mm) | 20 pcs
- -114 | AN6227-12 | 3/32" CS (2.38 mm) | 5/8" ID (15.88 mm) | 13/16" OD (20.64 mm) | 20 pcs
- -115 | AN6227-13 | 3/32" CS (2.38 mm) | 11/16" ID (17.46 mm) | 7/8" OD (22.23 mm) | 20 pcs
- -116 | AN6227-14 | 3/32" CS (2.38 mm) | 3/4" ID (19.05 mm) | 15/16" OD (23.81 mm) | 20 pcs
1/8" CS (0.125" | 3.18 mm)
- -210 | AN6227-15 | 1/8" CS (3.18 mm) | 3/4" ID (19.05 mm) | 1" OD (25.40 mm) | 10 pcs
- -211 | AN6227-16 | 1/8" CS (3.18 mm) | 13/16" ID (20.64 mm) | 1-1/16" OD (26.99 mm) | 10 pcs
- -212 | AN6227-17 | 1/8" CS (3.18 mm) | 7/8" ID (22.23 mm) | 1-1/8" OD (28.58 mm) | 10 pcs
- -213 | AN6227-18 | 1/8" CS (3.18 mm) | 15/16" ID (23.81 mm) | 1-3/16" OD (30.16 mm) | 10 pcs
- -214 | AN6227-19 | 1/8" CS (3.18 mm) | 1" ID (25.40 mm) | 1-1/4" OD (31.75 mm) | 10 pcs
- -215 | AN6227-20 | 1/8" CS (3.18 mm) | 1-1/16" ID (26.99 mm) | 1-5/16" OD (33.34 mm) | 10 pcs
- -216 | AN6227-21 | 1/8" CS (3.18 mm) | 1-1/8" ID (28.58 mm) | 1-3/8" OD (34.93 mm) | 10 pcs
- -217 | AN6227-22 | 1/8" CS (3.18 mm) | 1-3/16" ID (30.16 mm) | 1-7/16" OD (36.51 mm) | 10 pcs
- -218 | AN6227-23 | 1/8" CS (3.18 mm) | 1-1/4" ID (31.75 mm) | 1-1/2" OD (38.10 mm) | 10 pcs
- -219 | AN6227-24 | 1/8" CS (3.18 mm) | 1-5/16" ID (33.34 mm) | 1-9/16" OD (39.69 mm) | 10 pcs
- -220 | AN6227-25 | 1/8" CS (3.18 mm) | 1-3/8" ID (34.93 mm) | 1-5/8" OD (41.28 mm) | 10 pcs
- -221 | AN6227-26 | 1/8" CS (3.18 mm) | 1-7/16" ID (36.51 mm) | 1-11/16" OD (42.86 mm) | 10 pcs
- -222 | AN6227-27 | 1/8" CS (3.18 mm) | 1-1/2" ID (38.10 mm) | 1-3/4" OD (44.45 mm) | 10 pcs
3/16" CS (0.1875" | 4.76 mm)
- -325 | AN6227-28 | 3/16" CS (4.76 mm) | 1-1/2" ID (38.10 mm) | 1-7/8" OD (47.63 mm) | 5 pcs
- -326 | AN6227-29 | 3/16" CS (4.76 mm) | 1-5/8" ID (41.28 mm) | 2" OD (50.80 mm) | 5 pcs
- -327 | AN6227-30 | 3/16" CS (4.76 mm) | 1-3/4" ID (44.45 mm) | 2-1/8" OD (53.98 mm) | 5 pcs
- -328 | AN6227-31 | 3/16" CS (4.76 mm) | 1-7/8" ID (47.63 mm) | 2-1/4" OD (57.15 mm) | 5 pcs
- -329 | AN6227-32 | 3/16" CS (4.76 mm) | 2" ID (50.80 mm) | 2-3/8" OD (60.33 mm) | 5 pcs
- -330 | AN6227-33 | 3/16" CS (4.76 mm) | 2-1/8" ID (53.98 mm) | 2-1/2" OD (63.50 mm) | 5 pcs
- -331 | AN6227-34 | 3/16" CS (4.76 mm) | 2-1/4" ID (57.15 mm) | 2-5/8" OD (66.68 mm) | 5 pcs
- -332 | AN6227-35 | 3/16" CS (4.76 mm) | 2-3/8" ID (60.33 mm) | 2-3/4" OD (69.85 mm) | 5 pcs
- -333 | AN6227-36 | 3/16" CS (4.76 mm) | 2-1/2" ID (63.50 mm) | 2-7/8" OD (73.03 mm) | 5 pcs
- -334 | AN6227-37 | 3/16" CS (4.76 mm) | 2-5/8" ID (66.68 mm) | 3" OD (76.20 mm) | 5 pcs
Applications & Use Cases
This AN6227 O-Ring kit is commonly used in:
- Hydraulic cylinders and systems
- Pneumatic tools and motors
- Pumps and valves
- Aviation support equipment
- Industrial maintenance departments
- Fleet service trucks
- Manufacturing facilities
If you maintain oil, fuel, or hydraulic systems, this kit gives you coverage across the most commonly used inch sizes without overloading you with rarely used inventory.
Key Specifications
- Material: Buna-N (NBR)
- Durometer: 70 Shore A
- Color: Black
- Conforms dimensionally to AS568 and AN6227 sizes
- Temperature Range: -40°F to +225°F (–40°C to +107°C)
- Application Focus: Petroleum, hydraulic, and fuel sealing
Why Buy from The O-Ring Store LLC
When you purchase from The O-Ring Store LLC, you are not just buying an O-Ring kit. You are working with a sealing partner.
- ISO9001:2015 certified quality processes
- USA stock for fast delivery
- Same-day shipping on in-stock items
- Custom sizes available
- Full lot traceability and documentation available upon request
- Experienced technical support team
- Competitive pricing without sacrificing material integrity
We focus on making O-Rings easy so your operation runs smoother.
Frequently Asked Questions
1. Are these true AN6227 sizes or generic equivalents?
They conform dimensionally to both AS568 universal standards and AN6227 size specifications, ensuring proper fit in applications designed for those standards.
2. Is Buna-N 70 durometer suitable for hydraulic systems?
Yes. Buna-N 70 is one of the most widely used compounds for hydraulic and petroleum-based applications due to its oil resistance and durability.
3. Can I reorder individual sizes from this kit?
Absolutely. Every size in this kit is available individually, so you can replenish only what you use most frequently.
