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PTC® Durometers

PTC® Instruments manufactures and calibrates durometers to ISO 17025. We offer 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™.


306L Durometer Classic 408 Durometer Classic e2000 Durometer 511A Digital Durometer Digital Durometer SmartCable
 

201A Durometer 211A Durometer 472 Durometer Stand Durometer Repair & Calibration Durometer Stand Guide

A durometer is an instrument for testing the hardness of various plastics & rubber. ASTM D2240 Standard Test Method for Rubber Property, Durometer Hardness. This test method covers twelve types of rubber hardness measurement devices known as durometers:
ASTM Type A, B, C, D, DO, E, O, OO, OOO

DUROMETER TYPES AND SPECIFICATIONS
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TYPE
PTC MODEL No. MAIN SPRING TRAVEL INDENTER DESCRIPTION INDENTER
IMAGE
APPLICATIONS
A
ASTM D2240
JIS K6253

ISO 868
201
211
306L
408
501A
511A

821 gf
1.81 LB
0.100 inch
travel
Truncated Cone
35° Included Angle
A Indenter Soft rubber, elastomers, neoprene,
silicone, vinyl, nitrile, and butyl,
soft plastics, felt, leather,
waxes, printing rollers
and similar materials
B
ASTM D2240
821 gf
1.81 LB

0.100 inch travel
Conical
30° Included Angle
B Indenter Rubber, elastomers,
use when off the high
end of the A scale

C
ASTM D2240

202C
212C
307CL
409C
502C
512C
4.53 kgf
10 LB

0.100
inch travel
Truncated Cone
35° Included Angle
C Indenter Medium hard
rubber or plastics
use when off the
low end of the D scale
D
ASTM D2240
JIS K6253

ISO 868
202
212
307L
409
502D
512D
4.53 kgf
10 LB

0.100 inch travel
Conical
30° Included Angle
D Indenter Hard rubber, plastics, acrylic,
delrin, kevlar, pvc, nylon,
lexan, epoxies and similar materials
DO
ASTM D2240
202DO
212DO
413
502DO
512DO
4.53 kgf
10 LB

0.100 inch travel
3/32" Spherical
Diameter
(2.38mm)
DO Indenter Dense textile
winding, medium
printing rollers
E
ASTM D2240
408E
501E
511E
821gf,
1.81 lbs
0.100 inch travel
0.200" Spherical
Diameter
(5.08mm)
E Indneter Medium density
textile windings,
soft rubber,
foamed
elastomers,wound
threads,yarn
O
ASTM D2240
201/O
211/O
410
501/O
511/O
821gf,
1.81 lbs
0.100 inch travel
3/32" Spherical
Diameter
(2.38mm)
Type O Indenter Soft printing rollers,
textile windings
OO
ASTM D2240
113gf,
4.0 oz.
0.100 inch travel
3/32" Spherical
Diameter
(2.38mm)
Type OO Indenter Sponge rubber,
very soft rubber
OOO
ASTM D2240
412
412L
113gf,
4.0 oz.
0.100 inch travel
1/2" Spherical
Diameter
(12.7mm)
Type OOO Indenter Very soft materials, (e.g.) open cell foam

SL
FOAM RUBBER

PTC STANDARD

142gf,
5.0 oz.
0.200 inch travel

1 cm2- Circular

(0.155in2)

Type SL Indenter Foam and sponge rubber,
cellular and gel-like material
CF
ASTM F1957-99
414CF 9.11kgf
20lbs
0.200 inch travel
.1/2" Spherical
Diameter
(12.7mm)
Type CF Indenter Composite Foam
Asker C
SRIS-0101
JIS K7312
601
603
604
611
855gf,
1.89 lbs
0.100 inch travel
0.200" Spherical
Diameter
(5.08mm)
Asker C Indenter
Medium density
textile windings, soft rubber,
foamed elastomers,
wound threads, yarn
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See below for PTC®'s Custom Durometers...

Composite Foam Durometer 414CF
 
PTC®'s 414CF ASTM F1957 Composite Foam Durometer

The PTC® Model 414 Type CF Durometers are manufactured and designed to measure the indentation hardness of all generations of foam products: Freon Blown types, Water Blown types and new Composite Foams. The instrument features a low glare aluminum serialized dial with bold, easy to read numbers. The durometer has a maximum reading hand for indicating peak readings test block and carrying case are also included. This product meets or exceeds the current ASTM F1957 standard test method for composite foam hardness, which was created at the task group level within ASTM Committee F24 on amusement rides and devices.


Drywall Durometer
 
PTC®'s 414USG Drywall Durometer

PTC®'s Model 414USG Durometer measures hardness of drywall sheets during processing. Drywall can be checked for proper curing before the cutting stage. The instrument features a low glare aluminum serialized dial with bold, easy to read numbers. The durometer has a Max Hold hand, which retains the peak reading. A test block and carrying case are included with the instrument.


Foam & Sponge Rubber Durometer
 
PTC®'s 302SL Foam & Sponge Rubber Durometer

The Model 302SL is a hand-held foam and sponge rubber hardness tester made exclusively by PTC® Instruments. The instrument has the capability to economically test the same type of material checked with an ILD tester. There is no direct conversion from the 302SL scale to ILD readings, however, the 302SL can be used for comparative testing.


Crab & Lobster Shell Durometer
 
PTC®'s Crab & Lobster Shell Durometers

Developed with the Alaska Dept. of Fish and Game and the Canadian Department of Fisheries and Oceans
  • Used by Fish and Game to Enforce Fishing Regulations.
  • Used by Marine Biologists for Crab Fisheries research.
  • Accurately measures shell hardness
  • Magnetic Max Hand
  • NIST Traceable Certification Available


Renfro Durometer
 
PTC®'s Renfro Durometer

Developed for National Association of Hoisery Manufacturers (NAHM)


Racing Tire Durometer
 
PTC®'s Racing Tire Durometer

This durometer specifically tailored to measuring racing tire hardness. The Model 306RL durometer is the first choice for use by tire manufacturers, technical inspectors, race teams, and engineers fast and accurate tire hardness.

See also...Digital Durometers | Digital Pencil Durometers | Durometer Stands | Test Blocks | Durometer Repair & Calibration | Durometer Technical Specifications | All PTC® Durometers | A2LA N.I.S.T. Certification




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