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PTC® Durometers
PTC® INSTRUMENTS manufactures a full line of durometers and durometer accessories and offers calibration, repair and certification services. These durometers are available to ASTM D2240, ASTM F1957,
JIS K-6301, JIS K-6253, DIN-53505, ISO-7619 and ISO-868 standards including many custom configurations.
Our sales department will help you determine the correct durometer for your application. We also offer material testing to determine the correct durometer type and style for your application at no charge.
All PTC® Durometers are manufactured in the U.S.A.
PTC Metrology™ is Accredited by A2LA to ISO/IEC 17025 and ANSI/NCSL Z540-1 for durometer calibration.
NIST traceable certification is available for any durometer type covered by current ASTM D2440, ASTM F1957, ISO 868, ISO 7619, or DIN 53505 standards. The Calibration Report will include
both "as received" and "as left" data on the force curve measurement. Durometer calibration includes: indenter geometry and extension, indicator linearity from 0 to 100, and mainspring force.
Other durometer types, custom models, and durometers of any manufacture can also be certified by PTC Metrology™.
Manufacturers of Durometers to ASTM D2240, F1957, ISO, JIS, and DIN standards since 1946.
Durometer Types and Specifications PDF
 Click image for close-up
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The Classic Style Durometers from PTC® Instruments are built to meet or exceed current ASTM D2240 and ISO 868 specifications.
ASTM Type...
Type A
Type B
Type C
Type D
Type OOO
This durometer can be used either with a test stand, hand-held or with the constant load weight. Please refer to the stand selection guide for appropriate instruments.
The PTC® Classic Style Durometer comes complete with carrying case and test block. A standard maximum hand holds the peak reading until reset.
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The PTC® Pencil Style Durometers are manufactured to meet or exceed current ASTM D2240 and ISO 868 specifications and designed to measure the indentation hardness of rubber, elastomers, foams, gels, and
plastics. The durometer's 1/2" diameter base (1.3cm) is the smallest base permitted by ASTM D2240 specifications. This allows it to be used in confined or hard to reach areas other durometers cannot test.
A standard max hand holds the peak reading until reset. The dial has a red zone to indicate unreliable readings.
ASTM Type...
Type A
Type B
Type C
Type D
Type O
Type OO
Type DO
Asker Type C
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The Pencil Style Digital Durometers with a 1/2" diameter base (1.3cm) and overall length will allow the durometer to be used in confined or hard to reach areas with 0.1 reading resolution.
A knurled surface gives a more secure grip when making hand held readings.
ASTM Type...
Type A
Type B
Type C
Type D
Type O
Type DO
Asker Type C
All Digital Durometers come complete with Electronic Max Hold feature, Test Block, Carrying Case and a NIST traceable certification. PTC Metrology™ is accredited by A2LA to ISO/IEC17025 and ANSI Z-540.
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The Ergo Style Durometers from PTC® Instruments are built to meet or exceed current ASTM D2240 and ISO 868 specifications.
The 400 Series Durometers features a removable knob for small confined areas while landing on a solid 1" x 1 " base. Type A, B, C, D, DO, E, O, OO, and ISO-7619-1 type AO.
ASTM Type...
Type A
Type B
Type C
Type D
Type E
Type O
Type OO
Type DO
Type AO
The PTC® Ergo Style Durometers come complete with carrying case, test block and a magnetic max hand that holds the peak reading until reset.
A test report is included for A & D models which notes the value at 20,40 60 & 80. For complete calibration services please refer to PTC Metrology™ an A2LA Accredited Laboratory.
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The design of the e2000 is the ultimate in hand held hardness measurements. Easier handling and more repeatable readings are the result of PTC®'s Ergonomic Research.
The 1.25" diameter base (3.2cm) is the most practical size for maximum repeatability and increased stability. All PTC® durometers come complete with test block, carrying case and max hand.
ASTM Type...
Type A
Type B
Type C
Type D
Type E
Type O
Type DO
Any e2000 Millennium Style Durometer can be made as an "R" designation. The "R" designation specifies a presser foot diameter of 18 ± 0.5mm (0.71 ± 0.02in) in diameter, while the spring forces and
indenter configurations remain the same. Please specify the "R" Type when ordering. US Patent D436,874
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PTC®'s e2000 Digital is the ultimate digital durometer for accurate hand held hardness measurements of the indentation hardness of rubber, elastomers, and other rubber-like substances, such as neoprene, silicone, vinyl, nitrile,
and butyl. It can also be used for soft plastics, felt, leather, plastic, lexan, kevlar and similar materials.
ASTM Type...
Type A
Type B
Type C
Type D
Type E
Type O
Type OO
Type DO
The e2000 Series durometers are easy to grip and the 1.25" (3.2cm) diameter base has a large landing area for increased stability and maximum repeatability. All PTC® digital durometers come complete with
test block , carrying case and NIST traceable certificate from PTC Metrology™.
US Patent D436,874
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