GORE™ ONE-UP® Diaphragms


GORE™ ONE-UP® Pump Diaphragms are durable and versatile. With proprietary PTFE on the wetted side, they last significantly longer than other conventional PTFE diaphragms. These diaphragms provide a dramatic improvement in service life and are considerably stronger, with greater flex life. Excellent chemical resistance makes ONE-UP® Pump Diaphragms extremely versatile. They are suitable for use with most chemicals and in elevated temperatures and pressures, and are ideally suited for general-service pumps that are used for a variety of pumping tasks.

Satisfaction guaranteed, or purchase price will be refunded.

Key features

  • Made from a proprietary 100 percent PTFE
  • Bonded to a reinforced rubber backing
  • Patented rib construction
  • Chemically inert and temperature resistant
  • Greater flex life
  • Available for most makes of pumps and sizes
Key benefits
  • Longer lasting: replace diaphragms less often
  • Versatile: diaphragms work with most chemicals
  • Lower cost: maintenance and operating costs


  • Versa-Matic
  • Warren Rupp
  • Wilden (Wilden, Depa & Unitec pumps)
  • Graco
  • Yamada
  • ARO
Technical data

Material: Proprietary 100% PTFE on wetted side
Construction: One-piece design
Temperature range:

  • Neoprene backing: 14°F to 200°F (-10°C to 93°C)
  • EPDM backing: 14°F to 280°F (-10°C to 137°C)
  • Viton backing: 32°F to 350°F (0°C to 176°C)

Chemical resistance: Resistance to all media in the 0-14 pH range except molten alkali metals and elemental fluorine.
Flex Life: More than 70MM cycles (ASTM-D-2176, 0.020 in. thick, 0.600 in. wide)
Impact Strength: 30.4 ft. lbs./in. (ASTM-D-256, 0.220 in. thick)
Safety: Complies to FDA 21 CFR 177.1550 (PTFE) requirements for food processing.

Last update: 4/20/2016

23 Dewey Lane, Bldg A - Gibsonia PA 15044  - info@masterflopump.com