568-241 BLACK HNBR HSN70 O-Ring

HNBR O-Ring, 3.859 in ID x 0.139 CS, 70A, Black, -40 to 325°F

Status
Out of Stock
Est. Ship Date
29 Oct 2026
Material
HNBR
Dash Size
241
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
325°F (163°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
3 7/8 inch
Nominal Outside Diameter
4 1/8 inch
Unit of Measure
EA
SKU:
HSN70241

Product Specification

-
Ordered as HSN70241, this is an AS568-241 black HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.859 in (98.02 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.137 in (105.08 mm). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, HNBR (Hydrogenated Nitrile) is specified for improved ozone and weathering resistance over standard nitrile, the oil resistance of nitrile with substantially better heat capability. Expect good resistance to petroleum oils and fuels, modern refrigerants, and ozone and weathering. Continuous operating temperature is published at -40°F (-40°C) to 325°F (162.8°C).

Maintenance and OEM teams specify it across heavy-duty powertrain, oilfield and downhole equipment, and automotive air conditioning.

Reference part number HSN70241 when ordering; the item is sold individually. Unit weight is approximately 3.7204 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Item
HSN70241
Description
568-241 BLACK HNBR HSN70 O-Ring
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
3.859 inch (98.02 mm)
Actual Outside Diameter
4.137 inch (105.08 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6006
Product Category
O-Rings - Bulk - Premium