Mutual Screw & Supply

0.21" CS X 7.475" ID HNBR O-Rings | AS568-361 | Dash 361 | 80 Durometer (6 / Pkg.)

0.21" CS X 7.475" ID HNBR O-Rings | AS568-361 | Dash 361 | 80 Durometer (6 / - Main image
$36.24 $54.91 In stock

HNBR o-rings in AS568-361, 7.475" 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: 361
  • Cross-section: 0.21" (5.33 mm)
  • Inner diameter: 7.475" (189.86 mm)
  • Durometer: 80 Shore A
  • Temperature range: -40°F to +300°F (-40°C to +149°C)
  • Measurement type: Imperial
  • Pack quantity: 6 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

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

View policy

Customer Reviews (4.8 / 5 · 5 reviews)

Ella D. ★★★★★

The 80 durometer feels just right for this high-temp application in my hydraulic system. These HNBR rings handled the -40°F start-up test with no issues, which is more than I can say for the last batch I tried.

Jason D. ★★★★★

Finally found an o-ring that actually fits my hydraulic press's gland without being too loose—the 0.21 cross-section seats perfectly. The 80 durometer feels sturdy under pressure, and it held up fine during a steam cleaning cycle near 250°F.

Benjamin N. ★★★★★

Installed two of these on a high-temp air compressor line where standard nitrile kept failing, and the -40°F to +300°F range has held up perfectly so far. The 80 durometer gives them enough stiffness to seat firmly without being a nightmare to snap into the groove.