Black Buna-N O-Ring | 39mm ID x 2.5mm Wide | 70 Durometer (175/Pkg.)

Mutual ScrewSKU: ZMUSH2.5X39B25

Price:
Sale price$30.59per 175( $0.17 each)
Pieces 175
Measurement type Metric
Material Nitrile
Color Black
Cross section 2.5
Cross section shape Round
Durometer 70
Inner diameter 39
Outer diameter 44
Temp range '-40°F to +250°F (-40°C to +121°C)
Weight 0.5 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Exact metric O-ring for compact sealing tasks. The 175-piece pack includes seven packs of 25 pieces each, featuring a 39 millimeters inner diameter and a 2.5 millimeters cross-section, with 70 Shore A hardness in Buna-N nitrile.

Specs

  • Dimensions: 39 millimeters inner diameter; 2.5 millimeters cross-section
  • Material grade: Buna-Nitrile (Buna 70 Shore A)
  • Hardness: 70 Shore A
  • Profile: Round O-ring / C/S-style seal
  • Packaging: 25 pieces per pack; total 175 pieces
  • Sizing: Metric

Features

  • Exact metric sizing: Precisely matched 39 millimeters inner diameter and 2.5 millimeters cross-section for reliable fit in small-seal applications
  • Material compatibility: Buna-Nitrile formulation delivers solid resistance to petroleum-based fluids and typical seal environments
  • Ideal use cases: Compact sealing tasks in small assemblies and equipment, including miniature hydraulic and pneumatic fittings, valves, and instrumentation
  • Batch consistency: 25 identical pieces per pack enables predictable replacements and streamlined inventory management
  • Design profile: Round O-ring with C/S-style seal geometry optimizes groove compatibility and seating
  • Total quantity: 175 pieces per order across seven packs for scalable maintenance and stocking

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

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