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306L Classic Style  408 Durometer   502D Durometer  511A Digital Durometer      201A Pencil Durometer      Digital Pencil Durometer          

PTC® Instruments manufactures and calibrates durometers to ISO 17025.

We manufacture durometers to meet or exceed ASTM D2240 standards. Our sales department will help you determine the correct durometer for your application. We offer material testing to determine the correct durometer type and style for your application at no charge.

All Calibration Standards are traceable to the National Institute of Standards and Technology (NIST). Durometer calibration services and reports are provided by PTC Metrology™ and will meet your ISO, ANSI, MIL, DoD, EuroNorm and other international standards including DIN 53505, ISO 868 and ISO 7619.  

Click here to view or download PDF  DUROMETER TYPES AND SPECIFICATIONS

Made in the USA

  • Shore A Scale Durometers
    Measure the hardness of neoprene, EPDM rubber, polyurethane, printing rollers, silicone, white PVC and other similar materials.
  • B Scale Durometers
    Measure the hardness of skate wheels, printing platen, rubber, thermoplastic, and elastomers.
  • C Scale Durometers
    Measure the Hardness of Medium Hard Rubber, Elastomers, and Thermoplastics.
  • Shore D Scale Durometers
    Measure the hardness of pipeline coatings, plexiglass, epoxy, vinyl, cellulose acetate, and other similar materials. ASTM D2240
  • AO Scale Durometer
    This instrument measures the indentation hardness of vulcanized or thermoplastic rubber in low hardness range and cellular rubbers.
  • DO Scale Durometers
    Measure the hardness of fireproof coatings, slasher beams, pyrocrete, and dense textile winding.
  • Type M Durometers with Stand
    This system is designed specifically for measuring small cross section O-rings and thin pieces of rubber (not less than 1.25mm thick).
  • Asker C Scale Durometers
    Measure Hardness of Soft Rubber, Sponge, Plastic Foam, Elastomers and similar materials. Asker C Durometers meet both JIS K7312 and SRIS 0101.