Mutual Screw & Supply

0.103" CS X 1.049" ID Buna-N Nitrile O-Rings | AS568-121 | Dash 121 | 70 Durometer | Black (800 / Pkg.)

0.103" CS X 1.049" ID Buna-N Nitrile O-Rings | AS568-121 | Dash 121 | 70 - Main image
$39.25 $56.89 In stock

Buna-N Nitrile o-rings in AS568-121, 1.049" inner diameter by 0.103" 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: 121
  • Cross-section: 0.103" (2.62 mm)
  • Inner diameter: 1.049" (26.64 mm)
  • Durometer: 70 Shore A
  • Color: Black
  • Temperature range: -40°F to +250°F (-40°C to +121°C)
  • Measurement type: Imperial
  • Pack quantity: 800 per package
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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 (5.0 / 5 · 5 reviews)

Stella F. ★★★★★

The cross-section on these o-rings is exactly 0.103" as listed, which made swapping out seals on an old pneumatic cylinder straightforward. Fit snugly into the groove without any distortion, and the 70 durometer feels just right for the application.

Ella ★★★★★

Ordered a pack for a hydraulic repair job and the 70 durometer hardness feels just right for a snug seal without being too stiff. These nitrile rings fit the groove perfectly on my application and show no signs of swelling after a few weeks in service. For the price per piece, it’s hard to beat the

David X. ★★★★★

The temperature range on these is spot on for my application, they’ve held up fine at 200°F without any hardening. The 70 durometer feels like the right balance—firm enough to seat properly, but they still slipped into the groove without a fight. Exactly the size I needed for a 1-inch bore.