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Industrial Standard Urethane Duro 70 O-ring Kit 36-Size


Quantity Discount Prices

  • Model: K436X36U70
  • 3 in Stock

Urethane 70 Industrial O-ring Kit

This kit contains a total of 436 70 Durometer O-Rings in 36 different sizes, providing an extremely low cost per size value.

Polyurethane: EU Polyether Urethane

General Purpose EU Polyurethane rubber is notable for its combination of hardness with elasticity, outstanding abrasion resistance and tear strength. Elastomeric urethane rubber, not to be confused with thermoplastic polyurethane, is often referred to as the "millable gum" urethane. Polyurethane is a moderately expensive material whose use is usually limited to applications that require its outstanding physical properties. Common end use applications are industrial seals, Air Guns, Paintball Markers, pneumatic applications, and other high dynamic applications.

O-ring Kit Includes:

  • 25pc AS568-005 3/32"ID X 7/32"OD X 1/16"CS
  • 25pc AS568-006 1/8"ID X 1/4"OD X 1/16"CS
  • 25pc AS568-007 5/32"ID X 9/32"OD X 1/16"CS
  • 25pc AS568-008 3/16"ID X 5/16"OD X 1/16"CS
  • 25pc AS568-009 7/32"ID X 11/32"OD X 1/16"CS
  • 25pc AS568-010 1/4"ID X 3/8"OD X 1/16"CS
  • 25pc AS568-011 5/16"ID X 7/16"OD X 1/16"CS
  • 15pc AS568-012 3/8"ID X 1/2"OD X 1/16"CS
  • 10pc AS568-013 7/16"ID X 9/16"OD X 1/16"CS
  • 10pc AS568-014 1/2"ID X 5/8"OD X 1/16"CS
  • 10pc AS568-015 9/16"ID X 11/16"OD X 1/16"CS
  • 10pc AS568-016 5/8"ID X 3/4"OD X 1/16"CS
  • 10pc AS568-017 11/16"ID X 13/16"OD X 1/16"CS
  • 10pc AS568-018 3/4"ID X 7/8"OD X 1/16"CS
  • 15pc AS568-110 3/8"ID X 9/16"OD X 3/32"CS
  • 10pc AS568-111 7/16"ID X 5/8"OD X 3/32"CS
  • 10pc AS568-112 1/2"ID X 11/16"OD X 3/32"CS
  • 10pc AS568-113 9/16"ID X 3/4"OD X 3/32"CS
  • 10pc AS568-114 5/8"ID X 13/16"OD X 3/32"CS
  • 10pc AS568-115 11/16"ID X 7/8"OD X 3/32"CS
  • 10pc AS568-116 3/4"ID X 15/16"OD X 3/32"CS
  • 7pc    AS568-117 13/16"ID X 1"OD X 3/32"CS
  • 7pc    AS568-118 7/8"ID X 1-1/16"OD X 3/32"CS
  • 7pc    AS568-119 15/16"ID X 1-1/8"OD X 3/32"CS
  • 7pc    AS568-120 1"ID X 1-3/16"OD X 3/32"CS
  • 7pc    AS568-121 1-1/16"ID X 1-1/4"OD X 3/32"CS
  • 10pc AS568-210 3/4"ID X 1"OD X 1/8"CS
  • 10pc AS568-211 13/16"ID X 1-1/16"OD X 1/8"CS
  • 10pc AS568-212 7/8"ID X 1-1/8"OD X 1/8"CS
  • 7pc    AS568-213 15/16"ID X 1-3/16"OD X 1/8"CS
  • 7pc    AS568-214 1"ID X 1-1/4"OD X 1/8"CS
  • 7pc    AS568-215 1-1/16"ID X 1-5/16"OD X 1/8"CS
  • 7pc    AS568-216 1-1/8"ID X 1-3/8"OD X 1/8"CS
  • 7pc    AS568-217 1-3/16"ID X 1-7/16"OD X 1/8"CS
  • 7pc    AS568-218 1-1/4"ID X 1-1/2"OD X 1/8"CS
  • 7pc    AS568-219 1-5/16"ID X 1-9/16"OD X 1/8"CS

Polyurethane (EU) Recommended uses:

  • Mechanical Applications
  • Wear Resistance
  • Pure aliphatic hydrocarbons (propane, butane, fuel)
  • Mineral oil and grease
  • Silicone oil and grease
  • Water up to 125°F (50°C) (EU type only)
  • Ozone and aging resistant.

Polyurethane (EU) is Not Recommended for:

  • Ketones, esters, ethers, alcohols, glycols
  • Hot Water above 40°C and Water Vapor
  • Dilute Alkalis and Acids
  • Amines
  • Refined Mineral Oils
  • Organic Solvents such as Acetone

Operating temperature: -30° to +180°F

*Actual testing in the application environment is always recommended.

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Stock O-Rings in over 20 different compounds and durometers the following six are the standard rubber materials in a range of durometers (Shore A) hardness to satisfy practically any service condition:

Viton® O-Rings / FKM: Fluorocarbon (Viton®) exhibits exceptional resistance to chemicals, oils, temperature extremes (-13°F to +446°F), low compression set, low gas permeability and excellent aging characteristics. Applications include: aircraft engines, automotive fuel handling systems, and chemical processing industries. FKM is also suitable for high vacuum applications. It is not recommended for exposure to ketones, alkalis, and Skydrol® fluids. Custom compounds are available with improved chemical and low temperature resistance.
AS-568 Viton® O-Rings | Metric Viton® O-Rings

Buna-N O-Rings / Nitrile O-Rings / NBR: Nitrile (Buna-N) is the most widely used elastomer due to its excellent resistance to petroleum products, operating temperature range (-40°F to +257°F) and one of the best performance-to-cost values. It's an ideal material for aerospace, automotive, propane and natural gas applications. Special Hydrogenated Nitrile (HNBR) compounds can improve resistance to direct ozone, sunlight, and weather exposure while increasing temperature range to +300°F.
AS-568 Buna-N O-Rings | Metric Buna-N O-Rings

Ethylene-Propylene / EPDM O-Rings: EPDM has outstanding resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (-40ºF to +275ºF); but it is not recommended for gasoline, petroleum oil and grease, and hydrocarbon environments. This popular rubber compound is usually the first choice for low torque drive belt applications.
AS-568 EPDM O-Rings | Metric EPDM O-Rings

Fluorosilicone O-Rings / FVMQ: Fluorosilicone (-75º to +400ºF) combines the good high and low temperature stability of silicones with the fuel, oil, and solvent resistance of fluorocarbons. FVMQ is unparalleled for aerospace fuel systems, auto fuel emission control systems and to meet or exceed government, military, aerospace, automotive, industrial and commercial specifications. However, due to relatively low tear strength, high friction and limited abrasion resistance of these materials, they are generally not used in dynamic applications. They are also not recommended for exposure to brake fluids, hydrazine, or ketones.
AS-568 Fluorosilicone O-Rings | Metric Fluorosilicone O-Rings

Silicone O-Rings / VMQ: In the Silicone family, you will find compounds which are superior as static seals in extreme temperature conditions. Standard compounds handle operating temperatures -85º to +400ºF. Silicone compounds are popular in food and medical applications because they are very clean and do not impart odor or taste. Special Phenyl silicones can be used down to -148°F.
AS-568 Silicone O-Rings | Metric Silicone O-Rings

Neoprene® O-Rings / CR: Neoprene (-40º to +250ºF) is reasonably priced and features good resistance to petroleum oils, ozone, sunlight and oxygen aging, relatively low compression set, good resilience and outstanding physical toughness. It is the preferred sealing material for the refrigeration industry because of its resistance to ammonia and Freon®.
AS-568 Neoprene® O-Rings