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Even when used in equal applications, it's common to see the same type of NBR-70 O-ring perform differently. These variances are due, in part, to the instability of physical and chemical properties caused by inconsistent compounding and processing.

We solve this performance issue with Parker's N674-70 O-rings. Zatkoff Seals & Packings is committed to consistently providing reliable, solutions-based products and services that meet its customers diverse needs.

In line with this commitment, we are proud to carry the largest N674-70 inventory in the world. Offering more than 4 million parts in stock, we can ensure access to N674-70 regardless of size, coating, or marking requirements.

Known for its excellent mechanical properties, including tremendous heat resistance, N674-70 nitrile rubber O-rings are compatible with a variety of oil and gas applications. Parker's N674-70 have a recommended temperature range of -30°F to 250°F and can be effectively used with aliphatic hydrocarbons, vegetable and mineral oils, and greases.

In addition to the extraordinary stock offerings at Zatkoff, we also provide all available variations of the N674-70 AS568 standard sizes. Adherence to this widely-used standard ensures full material availability of N674-70 O-rings to our aerospace, automotive, oil and gas, and general purpose manufacturing customers when oil and heat resistance is a requirement.

Product Features

  • Heat Resistance & Cold Flexibility
    • Standard Thermal Application (-30°F to 250°F)
    • Minimum Working Temperature -30°F
    • Maximum Working Temperature 250°F
    • Up to 100°C (212°F) with shorter life @ 121°C (250°F)
  • Chemical Resistance
    • Aliphatic hydrocarbons (propane, butane, petroleum oil, mineral oil and grease, diesel fuel, fuel oils), vegetable and mineral oils, and greases
    • HFA, HFB and HFC hydraulic fluids
    • Dilute acids, alkali, and salt solutions at low temperatures
  • Certifications:
    • MIL-G-21569, Class 1
    • MIL-P-82745
    • UL Listed

Underwriters' Laboratories Approved Services

Underwriters' Laboratories — JMLU2 — Gaskets and Seals

N674-70
Fire Extinguishing Agents A
Gasoline B
Gasoline/Alcohol Blends * C
Naptha or Kerosene D
MPS Gas E
MFG or Natural Gas F
Diesel Fuel, Fuel Oil, Lubricating Oil G
Heated Fuel Oil H
Anhydrous Ammonia I
LP-Gas J
Laundry Detergent L
Dishwashing Detergents M
Suitable Use in UL1081
Suitable Use in UL262 Applications
Suitable for UL25 Gasket Applications
Dry Chemical Carbon Dioxide Water

* Contact factory for specific ratios of alcohol (methyl and/or ethyl) and gasoline.

Note: Material certifications are subject to change. Please contact Zatkoff Seals & Packings for more information.

As one of the industry's premier manufacturers of O-rings and other elastomeric seals, Parker continues to develop products characterized by their superior performance and outmatched durability, and Zatkoff ensures your premium access to them.

Contact us today to learn more about Parker N674-70 or any other products of interest.

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