China, land of incorrectly sized garbage.

The standard sizes used by Parco and the other major O-ring manufacturers in the United States are defined by Aerospace Standard AS568B, Aerospace Size Standard for O-rings. That document, published by the Society of Automotive Engineers (SAE), lists the sizes of O-rings in six series or groups in both inches and millimeters. The first five series are based on cross-sectional diameter. The sixth series includes 20 sizes for boss seals. The standard sizes are also used for most military specifications

Durometer rating of orings? I'm looking to use this for high pressure supply line for power steering. thanks!

As long as the O-ring diameter is correct there shouldn’t be a problem.

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🔧 Fix it right, fix it fast — the only O-ring kit you’ll ever need!

BUILT TO ENDURE - Crafted from durable nitrile rubber that resists heat, corrosion, and wear—reliability you can count on.
ALL IN ONE TOOLKIT - Includes 4 specialized pick & hook tools to speed up installation and removal with professional ease.
PRECISION ORGANIZATION - Dual labeled cases separate SAE and metric sizes for quick access and seamless workflow on the go.
ULTIMATE REPAIR ARSENAL - 826 premium nitrile O-rings covering every essential size for flawless automotive and plumbing fixes.
UNIVERSAL COMPATIBILITY - Perfect for cars, faucets, pipes, hydraulics, and pneumatic systems—your go-to kit for every repair challenge.

The Orion Motor Tech 826-piece O-ring assortment features 32 essential SAE and metric sizes made from durable nitrile rubber, designed to resist heat, corrosion, and wear. Organized in dual labeled cases and paired with four precision pick & hook tools, this kit is engineered for professional-grade automotive, plumbing, and hydraulic repairs.

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267.13 DT

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Material	Nitrile Rubber
Nominal Inside Diameter	5E+1 Millimeters
Item Diameter	6 Millimeters
Brand	Orion Motor Tech
Color	red & blue case
Nominal Outside Diameter	57 Millimeters
Manufacturer	Orion Motor Tech
Unit Count	826 Count
Number of Pieces	826
Item Weight	3.11 pounds
Item model number	OMTORKSM02
Is Discontinued By Manufacturer	No
Manufacturer Part Number	OMT ORK-SM02-00-CA-1
Special Features	resisting corrosion, resisting heat, resisting wear

Orion Motor Tech 826pc Universal O Ring Assortment Kit with 32 Sizes, SAE & Metric O Rings for Automotive & Plumbing Repairs, Nitrile Rubber O Ring Set

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