568-344 PTFE ORINGS FDA

PTFE O-Ring, 3.85 in ID x 0.21 CS, 55D, White, -65 to 500°F

Status
Available
Est. Ship Date
31 Oct 2026
Material
PTFE (Polytetrafluoroethylene)
Dash Size
344
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
3/16 inch
Nominal Inside Diameter
3 7/8 inch
Nominal Outside Diameter
4 1/4 inch
Unit of Measure
EA
SKU:
TFE344
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Product Specification

-
Ordered as TFE344, this is an AS568-344 white PTFE (Teflon) 55 Shore D O-Ring built to an inside diameter of 3.85 in (97.79 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.27 in (108.46 mm). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

PTFE (Teflon) is specified for excellent dielectric properties and non-stick, non-contaminating surface characteristics. Expect good resistance to strong acids and bases, solvents, and nearly all industrial chemicals. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service. It is not the right choice where molten alkali metals or service requiring elastic recovery are present.

You will find this material specified across aggressive-media pipelines, chemical processing, and laboratory equipment.

Reference part number TFE344 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.
Item
TFE344
Description
568-344 PTFE ORINGS FDA
Actual Cross Section
0.21 inch (5.33 mm)
Actual Inside Diameter
3.85 inch (97.79 mm)
Actual Outside Diameter
4.27 inch (108.46 mm)
FDA Compliant
No
Measurement System
Imperial
Metal Detectable
No
NSF Certified
No
Product Code
6006
Product Category
O-Rings - Bulk - Premium