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568-345 GREEN HNBR (HSN) 70 ORINGS

HNBR O-Ring, 3.975 in ID x 0.21 CS, 70A, Green, -40 to 325°F

Status
Out of Stock
Est. Ship Date
22 Oct 2026
Material
HNBR
Dash Size
345
Durometer
70 Shore A
Cross Section Type
Round
Color
Green
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
325°F (163°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
4 inch
Nominal Outside Diameter
4 3/8 inch
Unit of Measure
EA
SKU:
HS70345

Product Specification

-
Part number HS70345 is an AS568-345 green HNBR (Hydrogenated Nitrile) 70 Shore A O-Ring measuring an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

The compound resists petroleum oils and fuels, ozone and weathering, and heat and oxidation. HNBR (Hydrogenated Nitrile) delivers long service life in refrigerant and oilfield duty, improved ozone and weathering resistance over standard nitrile. Rated temperature range runs from -40°F (-40°C) to 325°F (162.8°C) in continuous service. Verify compatibility before use with chlorinated hydrocarbons or esters.

You will find this material specified across commercial refrigeration, oilfield and downhole equipment, and automotive air conditioning.

This item is sold individually under part number HS70345. Review your operating media and conditions against this specification before installation.
Item
HS70345
Description
568-345 GREEN HNBR (HSN) 70 ORINGS
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
3.975 inch (100.97 mm)
Actual Outside Diameter
4.395 inch (111.63 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6006
Product Category
O-Rings - Bulk - Premium