461 PTFE SOLID BACKUP RING FDA

Ordered as TST461SO, this is an AS568-461 white PTFE (Teflon) 55 Shore D Back-Up Ring built to an inside diameter of 15.955 in (405.26 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 16.505 in (419.23 mm). The back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.

PTFE (Teflon) is specified here for non-stick, non-contaminating surface characteristics and near-universal chemical inertness. The compound resists steam, oxidizing media, and nearly all industrial chemicals. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with service requiring elastic recovery or elemental fluorine at temperature.

Typical settings include pharmaceutical and biotech, aggressive-media pipelines, and semiconductor fabrication.

Reference part number TST461SO when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation.