Mutual Screw & Supply

0.21" CS X 1.037" ID Buna-N Nitrile O-Rings | AS568-319 | Dash 319 | 70 Durometer | Black (250 / Pkg.)

0.21" CS X 1.037" ID Buna-N Nitrile O-Rings | AS568-319 | Dash 319 | 70 - Main image
$36.12 $58.25 In stock

Buna-N Nitrile o-rings in AS568-319, 1.037" inner diameter by 0.21" cross-section. Service range -40°F to +250°F (-40°C to +121°C). Also known as NBR, Buna-N, Chemigum, Hycar, Perbunan.

Specifications

  • Product type: O-Ring
  • Material: Buna-N Nitrile
  • AS568 dash size: 319
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 1.037" (26.34 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 250 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Eli I. ★★★★★

The 70 durometer hardness is exactly what I needed for a hydraulic repair, and the -40°F rating gives me peace of mind for outdoor use. These 0.21" cross-section rings fit perfectly into the groove and seal tight without any leaks.

Robert C. ★★★★★

I use these for rebuilding hydraulic cylinders, and the 70 durometer feels just right—not too stiff to seal but firm enough to hold pressure. The 250-count package is great; I've got plenty to keep a few spares on hand for future jobs.

Penelope ★★★★★

Exactly what the spec sheet said – the 1.037" ID fits snugly on our gland, and the 70 durometer feels firm but not brittle. I've used these across a few rebuilds now, no leaks and they handle the heat cycles fine. Solid buy for the price per pack.