ONE-UP® Pump Diaphragms


Guaranteed to last longer

One-Up® Pump Diaphram GARLOCK ONE-UP® pump diaphragms, containing high performance PTFE GORE® sheet on the wetted side, are a significant advancement over conventional PTFE diaphragms. Considerably stronger, with greater flex life, they provide a dramatic improvement in service life. Satisfaction guaranteed, or purchase price refunded.

Durable versatility

Chemical resistance is the property that makes GARLOCK® ONE-UP® pump diaphragms so versatile. Suitable for use with most chemicals and in elevated temperatures and pressures, these diaphragms are ideally suited for those general service pumps that are likely to be put to one use today and another use tomorrow. You can expect long, effective service life and reduced maintenance costs with these durable one-piece diaphragms. Strength and chemical resistance make ONE-UP® pump diaphragms perfect for most of your pumping requirements.

GARLOCK® ONE-UP® diaphragms may be used in potentially explosive atmospheres when installed in ATEX compliant pumps. For further information, please contact us.

Key Features

  • Contains high performance, PTFE GORE® sheet
  • Bonded to a reinforced rubber backing
  • Patented rib construction
  • Chemically inert & temperature resistant
  • Greater flex life
  • Available for most brands of pumps & sizes

Key Benefits

  • Longer Lasting: Replace diaphragms less often
  • Versatile: Diaphragms work with most chemicals
  • Cost: Lowers maintenance and operating costs

Technical Data
Material/construction

One-piece composite design with a proprietary 100% PTFE on wetted side.

Temperature Range
Neoprene backing: 14ºF to 200ºF (-10 to 93ºC)
EPDM backing: 14ºF to 280ºF (-10ºC to 137ºC)
Viton® backing: 32ºF to 350ºF (0ºC to 176ºC)

Chemical Resistance
Chemical resistance to all media in pH 0 – 14 range, except molten alkali metals and elemental fluorine.

Flex Life
>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)

Physiological safety
FOR INDUSTRIAL USE ONLY. Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations.

Technical Information


Warning - Properties/applications shown throughout this Website are typical. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult Beacon Gasket & Seals Co. Failure to select the proper sealing products could result in property damage and/or serious person injury. Performance data published in this Website has been developed from field testing, customer field reports and/or in-house testing. While the utmost care has been used in developing this Website, we assume no responsibility for errors. Specifications subject to change without notice.