-345 BLACK CHLOROPRENE 70D O-RING

Neoprene O-Ring, 3.975 in ID x 0.21 CS, 70A, Black, -40 to 250°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Neoprene (Chloropene)
Dash Size
345
Durometer
70 Shore A
Cross Section Type
Round
Color
Black
Minimum Temperature
-40°F (-40°C)
Maximum Temperature
250°F (121°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
4 inch
Nominal Outside Diameter
4 3/8 inch
Unit of Measure
EA
SKU:
N70345
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Product Specification

-
This o-ring is supplied in AS568-345 black Neoprene (Chloroprene) 70 Shore A with 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), catalogued under part number N70345. It remains the most cost-effective sealing element available for pressurized assemblies.

The compound resists ozone and weathering, refrigerants and ammonia, and mild acids. Neoprene (Chloroprene) delivers good resilience across a moderate temperature band and dependable general-purpose sealing in exposed installations. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in chlorinated solvents or ketones.

It sees regular use in HVAC and refrigeration, transit and rail, and general industrial.

Order part number N70345, sold individually. Unit weight is approximately 10.617 g and nominal inside diameter is listed as 4 inch. Review your operating media and conditions against this specification before installation.
Item
N70345
Description
-345 BLACK CHLOROPRENE 70D O-RING
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
6005
Product Category
O-Rings - Bulk - Commodity