-309 BLACK CHLOROPRENE 70D O-RING

Neoprene O-Ring, 0.412 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
309
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
7/16 inch
Nominal Outside Diameter
13/16 inch
Unit of Measure
EA
SKU:
N70309
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Product Specification

-
The N70309 is an AS568-309 black Neoprene (Chloroprene) 70 Shore A O-Ring supplied with an inside diameter of 0.412 in (10.46 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 0.832 in (21.13 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Neoprene (Chloroprene) delivers inherent flame-retarding characteristics and good resilience across a moderate temperature band. The material holds up against sunlight and salt spray, ozone and weathering, and mild acids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It should not be specified for service in strong oxidizing acids or aromatic hydrocarbons.

It sees regular use in weather sealing and enclosures, general industrial, and marine equipment.

Stocked as N70309 and sold individually. Unit weight is approximately 1.5512 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Item
N70309
Description
-309 BLACK CHLOROPRENE 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
0.412 inch (10.46 mm)
Actual Outside Diameter
0.832 inch (21.13 )
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity