-311 RED SILICONE 70D O-RING

Silicone O-Ring, 0.537 in ID x 0.21 CS, 70A, Red, -80 to 450°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Silicone
Dash Size
311
Durometer
70 Shore A
Cross Section Type
Round
Color
Red
Minimum Temperature
-80°F (-62.2°C)
Maximum Temperature
450°F (232°C)
Nominal Cross Section
3/16 inch
Nominal Inside Diameter
9/16 inch
Nominal Outside Diameter
15/16 inch
Unit of Measure
EA
SKU:
S70311
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Product Specification

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S70311 is an AS568-311 red Silicone 70 Shore A O-Ring with an inside diameter of 0.537 in (13.64 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 0.957 in (24.31 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

Silicone is specified here for exceptionally wide service temperature range and excellent electrical insulating properties. The material holds up against ozone and UV exposure, many oxidizing chemicals, and weathering. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Exposure to abrasive dynamic service or steam above its rated range will shorten service life.

It sees regular use in ovens and heated equipment, medical devices, and pharmaceutical manufacturing.

S70311 ships individually. Unit weight is approximately 1.834 g and nominal inside diameter is listed as 9/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Item
S70311
Description
-311 RED SILICONE 70D O-RING
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
0.537 inch (13.64 mm)
Actual Outside Diameter
0.957 inch (24.31 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity