---
title: Pelmor® Laboratories Inc. - News Room - Poppet Seals for Natural Gas Valves
description: Pelmor® Laboratories, is a full service, vertically integrated, custom manufacturer of all-rubber and rubber-to-metal bonded, molded and extruded parts.
---

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# News Room

**Poppet Seals for Natural Gas Valves**

Poppet seals, custom molded from Nitrile and many other high performance elastomeric compounds, are manufactured by Pelmor® Laboratories, Inc. for use in check valves for pressure relief and shut off devices in natural gas valve assembly applications.

With a typical poppet the size of approximately 1/4" square by 1/4" long, extremely high precision is required to mold seals for these intricate parts. While small in size, these poppets perform a critical function in maintaining a strong sealing surface in low-pressure natural gas applications. Excellent rubber-to-metal bonding, advanced machining capabilities for trimming molded parts, and pre-forming to 0.5 grams per piece to maximize manufacturing efficiencies, are among the highly specialized capabilities that Pelmor® brings to the production of these poppet seals.

A small bead of circular rubber compound, bonded to the brass seat of the check valve, forms a strong sealing surface when the shut-off valve compresses the elastomer. Pelmor’s elastomeric compounds withstand temperature extremes of -50° to +250° F; resist attack by over 750 corrosive chemicals and other liquids; and exhibit excellent abrasion resistance. Other properties include: tensile strength of 2350 psi; Shore A durometer of 70 +/- 5; and 330% elongation.

For additional information, contact Pelmor® Laboratories, Inc., 401 Lafayette Street, Newtown, PA 18940-0309; Phone: 800-772-6969 or 215-968-3334; Fax: 215-968-3676; E mail: sales@pelmor.com.

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© 2016 Pelmor® Laboratories, Inc. • 401 Lafayette Street • Newtown, PA 18940 USA  
U.S. and Canada: 1-800-772-6969 • Worldwide: 215-968-3334 • Fax: 215-968-3676 • [sales@pelmor.com](mailto:sales@pelmor.com)