Mutual Screw & Supply

0.21" CS X 4.1" ID HNBR O-Rings | AS568-346 | Dash 346 | 90 Durometer (5 / Pkg.)

0.21" CS X 4.1" ID HNBR O-Rings | AS568-346 | Dash 346 | 90 Durometer (5 / Pkg.) - Main image
$37.88 $50.5 In stock

HNBR o-rings in AS568-346, 4.1" inner diameter by 0.21" cross-section. Service range -40°F to +300°F (-40°C to +149°C). Also known as HSN, Highly Saturated Nitrile.

Specifications

  • Product type: O-Ring
  • Material: HNBR
  • AS568 dash size: 346
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 4.1" (104.14 mm)
  • Durometer: 90 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 5 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 (4.2 / 5 · 5 reviews)

Ryan ★★★★★

The 90 durometer feels reassuringly stiff, so I’m confident these will hold up under constant heat near my compressor. They slipped into the groove with a snug, solid fit, and the -40°F to +300°F range covers everything I need.

James ★★★★★

The 90 durometer hardness is exactly what I needed for a high-pressure seal that kept deforming with softer rings. These held their shape perfectly during a 250°F test run, and the temperature range gives me confidence for year-round outdoor use.

Eva ★★★★☆

Fit perfectly onto my hydraulic cylinder and the 90 durometer feels much stiffer than the standard black rings I was using before. Only gave it four stars because I expected a slightly softer feel for the application, but they seal well.