Black Buna-N O-Ring | 387mm ID x 5.3mm Wide | 70 Durometer
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Black Buna-N O-Ring | 387mm ID x 5.3mm Wide | 70 Durometer

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Black Buna-N O-Ring | 387mm ID x 5.3mm Wide | 70 Durometer (4/Pkg.)

Mutual ScrewSKU: ZMUSH5.3X387B1
Price:
$31.60per 4( $7.90 each)
Pieces 4
Measurement type Metric
Material Nitrile
Color Black
Cross section 5.3
Cross section shape Round
Durometer 70
Inner diameter 387
Outer diameter 397.6
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

This 4-piece set comprises Black Buna-N O-Rings engineered for metric sealing in large-diameter assemblies. With a 387 millimeter inner diameter, 5.3 millimeter cross-section, and 70 Duro hardness, these O-Rings deliver stable sealing performance in hydraulic and fluid-handling applications.

Specs

  • Dimensions: Inner Diameter 387 millimeter; Cross-section 5.3 millimeter
  • Material Grade: Buna Nitrile Rubber (Buna) — Metric Buna compound
  • Durometer: 70 Duro
  • Pack Quantity: 4 pieces per order

Features

  • Compound: Metric Buna rubber (Buna-N) provides oil and hydrocarbon resistance suitable for petroleum-based fluids
  • Sealing Precision: 387 millimeter ID and 5.3 millimeter cross-section enable a tight, repeatable seal in large-bore metric assemblies
  • Hardness: 70 Duro contributes stable compression and predictable sealing under thermal and load cycling
  • Packaging: Single-piece packaging per bag supports straightforward inventory control and kit assembly
  • Use Case: Ideal for replacement seals in hydraulic manifolds, fluid handling lines, and machinery requiring metric O-ring seals
  • Color: Black

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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