Precision Associates, Inc.
Precision Associates, Inc.
3800 North Washington Ave.
Minneapolis, MN 55412-2142
Toll Free: 1-800-394-6590
Local: +1 612-333-7464
Sales: +1 612-334-9190
Fax: 612-342-2417
Email: [email protected]
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Search our 2,700+ Standard & Special Size O-Ring Tooling List. O-Rings are available with inside diameters (ID) as small as .004" and as large as 34". If you can't find your O-Ring size, please call - new O ring sizes are added regularly. If we are not tooled for your non-standard O-Ring, we can make a special tool in our On-Site mold shop.

Click here to view our O-Ring Brochure.
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Item #

C/S (inches)

C/S Tolerance (±)

I.D. (inches)

I.D. Tolerance (±)

O.D. (REF) (inches)

Metric C/S (mm)

Metric I.D. (mm)

Metric O.D. (mm)

Material

Duro Range

Class 7 Clean Room Medical Grade
12-145 N/A 0.012 N/A 0.003 N/A 0.145 N/A 0.005 N/A 0.169 N/A 0.3 N/A 3.7 N/A 4.3 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
16-47 N/A 0.016 N/A 0.003 N/A 0.047 N/A 0.004 N/A 0.079 N/A 0.4 N/A 1.2 N/A 2 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
16-171 N/A 0.016 N/A 0.003 N/A 0.171 N/A 0.005 N/A 0.203 N/A 0.4 N/A 4.3 N/A 5.2 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
16-175 N/A 0.016 N/A 0.003 N/A 0.175 N/A 0.005 N/A 0.207 N/A 0.4 N/A 4.4 N/A 5.3 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
16-438 N/A 0.016 N/A 0.003 N/A 0.438 N/A 0.005 N/A 0.470 N/A 0.4 N/A 11.1 N/A 11.9 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
17-30 N/A 0.017 N/A 0.003 N/A 0.030 N/A 0.004 N/A 0.064 N/A 0.4 N/A 0.8 N/A 1.6 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
17-44 N/A 0.017 N/A 0.003 N/A 0.044 N/A 0.004 N/A 0.078 N/A 0.4 N/A 1.1 N/A 2 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
17-65 N/A 0.017 N/A 0.003 N/A 0.065 N/A 0.004 N/A 0.099 N/A 0.4 N/A 1.7 N/A 2.5 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
17-2.400 N/A 0.017 N/A 0.003 N/A 2.400 N/A 0.018 N/A 2.434 N/A 0.4 N/A 61 N/A 61.8 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
18-81ES N/A 0.018 N/A 0.003 N/A 0.082 N/A 0.005 N/A 0.118 N/A 0.5 N/A 2.1 N/A 3 N/A Chloroprene Rubber (CR) (Neoprene®) Ethylene Propylene Diene Monomer (EPDM) Fluoroelastomer (FKM) Fluorosilicone Hydrogenated Nitrile Butadiene Rubber (HNBR) Hydrogenated Nitrile Butadiene Rubber (XNBR) Nitrile Butadiene Rubber (NBR) Perfluoroelastomer (FFKM) Silicone Tetrafluoroethylene Propylene (Aflas®) Urethane N/A 30 ±5 40 ±5 50 ±5 60 ±5 70 ±5 80 ±5 90 ±5 N/A Not Required Required
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