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RX-1600 Precision Durometer

Made in USA
RX-1600 Durometer
Click images to enlarge.
Available Scales: A, AO, B, CF, D, E, DO, M, O, OO, OOO, OOO-S, (Asker, ISO, DIN & JIS Scales also available, inquire)

The RX-1600 Durometer features a full-sized dial face for readability to within 1/2 point. The RX-1600 offers the maximum accuracy available in a dial model gauge at a minimum cost.

Type M Durometers require test stand OS-3 per ASTM D2240.


  • Includes NIST-Traceable Calibration Certificate
  • Full 360 degree sweep
  • One year warranty
  • Conforms to ASTM D-2240
  • Minimum Sample Thickness-Type A = 6.00 mm (0.250")
    Minimum Sample Thickness-Type M = 1.25 mm (0.050")
  • Optional Removable Stainless Steel Barrel for Medical and Food Applications
    (Must be specified at time of order, not suitable for use with RX-1600-M or RX-1600-OOO-S)
  • Smallest diameter footer permitted by ASTM D2240 (1/2") permits measurement on parts with small surface area or close to the edge with maximim visibility

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Durometer Load Weight for Types A, B, O, OO & OOO

Durometer Test Stands

AD-100 Durometer mounting in optional test stand We offer a complete line of durometer test stands. The stand, when used in conjunction with a Durometer, eliminates operator error sometimes associated with hand-held durometer testing. Our stands feature a load weight for the proper testing pressure as noted in ASTM D2240, and a quick-lock column for easy adjustment. Click here for more info on Durometer Test Stands.


Complete Kit

The RX-1600 is supplied as a complete kit including the durometer & instruction manual in a foam-fitted metal carrying case.

Slim Probe Durometers

Slim Probe Durometers
We offer custom slim probe versions of most durometer models and types. The slim probe attachment can be modified to fit your specific needs or applications.

Click here for more information


Measuring Range0 - 100 units
Accuracy*±1 durometer unit (A,B,C,D,E,O,DO)
±2 durometer units (OO,OOO)
±4 durometer units (M)
Tolerance± 0.5 at "100" and -0 +1 at "0"
Dimensions2.25" x 6.125"H
Weight6 oz.
* Noteper ASTM D 2240-05, Sect 9.3: It is accepted that durometer readings below 20 or above 90 are not considered reliable. It is suggested that readings in these ranges be omitted.
Mounting Thread5/16-40
Indentor Tip303 Stainless with Melonite case hardened


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Item Description Price
Type A Durometer for Soft rubber, plastics and elastomers.
Type B Durometer for Harder elastomers and plastics. Use above 93 A scale.
Type C Durometer for Medium hard elastomers and plastics.
Asker C Durometer for foam rubber
Type CF Durometer for Seat Foam Hardness - This item is no longer available. There is no replacement.
Type D Durometer for Hard rubber and plastics
Type DO Durometer for Dense granular material and textile windings.
Type M Durometer for Rubber and other soft material as thin as .050"
Type O Durometer for soft elastomers below 20 A scale
Type OO Durometer for Light foams, sponge rubber gels and animal tissue.
Type OOO Durometer for Ultra soft gels and sponge rubber
Type OOO-S Durometer for Ultra soft gels and sponge rubber softer than OOO
Type A Test Block Kit with NIST traceable certificate, 7 Color Coded Blocks - TBK-A
Type D Test Block Kit with NIST traceable certificate, 3 Color Coded Blocks - TBK-D
Rectangular Footer for Durometers with 1/2" Diameter Barrel, 41 x 19 mm
Upgrade to Removable Stainless Steel Barrel for Medical and Food Applications
(Must be specified at time of order, not suitable for use with RX-1600-M or RX-1600-OOO-S)
Memory Pointer For RX-1600 Durometer (Upgrade to RX-2000 Model)
In stock
1 Week Lead Time (Estimated)
2-3 Week Lead Time (Estimated)
Lead Time Varies, Please contact us for availability.