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Viton O-Ring 75A, 3-7/8" ID, 4-1/4" OD, 3/16" Width, Pack of 10

Mr O-Ring ★ 4.2/5 · ItemOracle Score Mid-Range

$45 USD
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344 Viton O-Ring, 75A Durometer, Black, 3-7/8" ID, 4-1/4" OD, 3/16" Width (Pack of 10)

Viton O-ring (75A) with round cross-section for sealing between cylindrical surfaces. Resistant to chemicals and wide temperature range. Customer insight: fits well and holds up in heat

Highlights

  • 75A durometer for resistance to penetration
  • wide temperature range (-15 F to 400 F)
  • AS568A aerospace standard compatibility

Pros

  • chemical and fuel compatibility
  • wide temperature tolerance
  • 75A hardness for penetration resistance
  • round cross-section for reliable seal
  • comes in a pack of 10

Cons

  • no explicit size compatibility beyond listed dimensions
  • no information on chemical compatibility limits beyond 'variety of chemicals and fuels'
  • no installation guidance

Best For

  • sealed connections in fuel-related applications
  • replacement O-rings for cylindrical fittings
  • sealing in high-temperature environments
  • MSA fuel bottle applications
  • Remington 1100 barrel seal replacements
  • silencer components (example use case)

Features

  • Viton fluorocarbon elastomer resists a variety of chemicals and fuels
  • Round cross-section provides a seal between cylindrical surfaces
  • Operates from -15°F to 400°F (-26°C to 205°C)
  • Durometer hardness of 75A for resistance to penetration
  • Meets Aerospace Standard AS568A

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