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466 PTFE SOLID BACKUP RING FDA

PTFE Back-Up Ring, 18.455 in ID x 0.275 CS, 55D, White, -65 to 500°F

Status
Out of Stock
Est. Ship Date
21 Oct 2026
Material
PTFE (Polytetrafluoroethylene)
Dash Size
466
Durometer
55 Shore D
Cross Section Type
Round
Color
White
Minimum Temperature
-65°F (-53.9°C)
Maximum Temperature
500°F (260°C)
Nominal Cross Section
1/4 inch
Nominal Inside Diameter
18 1/2 inch
Nominal Outside Diameter
19 inch
Unit of Measure
EA
SKU:
TST466SO

Product Specification

-
Part number TST466SO is an AS568-466 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 18.455 in (468.76 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 19.005 in (482.73 mm). A back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.

PTFE (Teflon) offers near-universal chemical inertness and a very wide continuous service temperature range. This material stands up to nearly all industrial chemicals, solvents, and steam. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service.

Common environments for this compound include laboratory equipment, food and beverage, and semiconductor fabrication.

This item is sold individually under part number TST466SO. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
Item
TST466SO
Description
466 PTFE SOLID BACKUP RING FDA
Actual Cross Section
0.275 inch (6.99 mm)
Actual Inside Diameter
18.455 inch (468.76 mm)
Actual Outside Diameter
19.005 inch (482.73 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6002
Product Category
O-Rings - Backup Rings