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Home > Products > Hardness > Durometer Hardness Standards
Durometer Hardness Standards

Test Block Kits

"A" and "D" Scales

Durometer Hardness Standards

This kit will prove to be invaluable in helping to maintain durometer read-out accuracy for scientific, manufacturing, and research and development use. As a reference check, it will indicate if a durometer is operating within tolerances.

"A" scale consists of 7 color-coded rubber test blocks of various Type A durometer hardness values ranging from 30 durometer to 90 durometer, and are housed in a convenient, rigid, custom-fit protective box. "D" scale consists of 3 test blocks ranging from 20 to 80 durometer.

Instant identification of a particular hardness range is made fast and easy because of our advanced color identification.

While these test blocks are a convenient form of comparative verification, they are not intended to be used for the purpose of durometer calibration. Rather, they are a form of “quick reference” to the operational status of the durometer being used. A large variation would indicate the need for recalibration of the durometer being utilized. This should be done in accordance with the methods indicated in ASTM D 2240.

The material (rubber) from which the test blocks are made is fairly stable, however, it is strongly recommended that calibration of these test blocks be verified annually.


Durometers and accessories are guaranteed for a period of one year against defective workmanship and/ or material. The guarantee does not apply to products that are mishandled, misused, etched, stamped or otherwise marked or damaged. We reserve the right to change the design without notice

Technical Data
Size of each Test Block Approx.: 2" x 2"
Thickness of each Test Block: .250"
Material Used: Rubber
Size of Fitted Case: 5.5" x 4.687" x 2.562"
Weight: 22 oz.
Item No. Nominal "A" Values
HA-0211 Blue 30 durometers Durometer Standard Colors
HA-0212 Red 40 durometers
HA-0213 Orange 50 durometers
HA-0214 Yellow 60 durometers
HA-0215 Tan 70 durometers
HA-0216 Black 80 durometers
HA-0217 Gray 90 durometers
Item No. Nominal "D" Values
Blue 20 durometers
HA-0222 Gray 40 durometers
HA-0223 Black 80 durometers

Case Description:
Black with magnetic lid latch; fitted poly insert.

Calibration Information:
Actual durometer readings of each block provided on attached panel inside case lid.

Available Items - Literature
Prices subject to change    Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only    Export orders require quotations - click here for a quote     For more info call us 1-800-762-2478 or 954-946-9454.
Item Number Item Prices
HA-0201 Model TBK-A Elastomer Test Block Kit,with 7 Blocks & Case $225.00
HA-0205 Model TBK-D Elastomer Test Block Kit,with 3 Blocks & Case 150.00
Individual test blocksIndividual test blocks (Item Numbers Above) 50.00
HA-0207 Model TBK-00 w/3 blocks & case 175.00

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