-257 BROWN FKM 90D O-RING

Viton® O-Ring, 5.859 in ID x 0.139 CS, 90A, Brown, -15 to 400°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
Fluoroelastomer (FKM/Viton)
Dash Size
257
Durometer
90 Shore A
Cross Section Type
Round
Color
Brown
Minimum Temperature
-15°F (-26°C)
Maximum Temperature
400°F (204°C)
Nominal Cross Section
1/8 inch
Nominal Inside Diameter
5 7/8 inch
Nominal Outside Diameter
6 1/8 inch
Unit of Measure
EA
SKU:
VB90257
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Product Specification

-
Ordered as VB90257, this is an AS568-257 brown Viton® (FKM) 90 Shore A O-Ring measuring an inside diameter of 5.859 in (148.82 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 6.137 in (155.88 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

Viton® (FKM) is specified here for very low compression set at elevated temperature, excellent resistance to compression set and permeation. It resists aggressive chemicals, engine and transmission fluids, and many acids. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service.

Typical settings include high-temperature process equipment, oil and gas, and chemical processing.

Stocked as VB90257 and sold individually. Unit weight is approximately 10.543 g. Check the compound against your process media, pressure and temperature before committing to a design.
Item
VB90257
Description
-257 BROWN FKM 90D O-RING
Actual Cross Section
0.139 inch (3.53 mm)
Actual Inside Diameter
5.859 inch (148.82 mm)
Actual Outside Diameter
6.137 inch (155.88 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6005
Product Category
O-Rings - Bulk - Commodity