Rubber Testing
| Model CS-3 | Latex Stability Apparatus | ASTM D1076, D1417 |
| Model CS-32 | Permanent Set Apparatus | ASTM D412 |
| Model CS-86A | Compression Set | ASTM D395 Method A |
| Model CS-86B | Compression Set | ASTM D395 Method B |
| Model CS-86A-X | Compression Set | ASTM D395 Method A |
| Model CS-111 | Nopco Ball Rebound Test | ASTM D3574 Test H |
| Model CS-187A | Automatic Retraction Apparatus | ASTM D1329 |
MODEL CS-3 LATEX STABILITY TESTER
Technical References
ASTM D 1076
ASTM D 1477
Description
The CS-3 Latex Stability Tester is designed to test the mechanical stability of concentrated natural lattices and synthetic lattices when subjected to high-speed mechanical stirring. The endpoint is determined by either the presence of coagulated rubber or the percentage of coagulum after a period of time.
MODEL CS-32 PERMANENT SET APPARATUS
Technical References
ASTM D 412
Description
Tensile set testing of rubber or thermoplastic elastomers is accomplished economically with the CS-32 Permanent Set Apparatus. The CS-32 evaluates the residual elongation of up to 6 test specimens after stretching them and then allowing the specimens to relax for a specific amount of time. The time for stretching and recovery is specified by ASTM D 412.
MODEL CS-86A COMPRESSION SET APPARATUS – EXTERNAL LOADING
Technical References
ASTM D 395 Method A
Description
The Model CS-86A consists of a loading spring and two parallel compression plates assembled using threaded bolts and a base plate. The unit is portable and self-contained after a load has been applied. The load is applied to the compression plates and spring by external means after the test specimen is mounted in the apparatus. Either a calibrated compression machine or dead weights may be used for load application. The bolts and nuts prevent the specimen and spring from losing their initial deflections when the external load is removed. The compression plates and base are 5.5 x 3.5 x 5/8 inches. The apparatus is 8.5 inches high. The plates and base are manufactured of polished chrome-plated steel.
MODEL CS-86B COMPRESSION SET APPARATUS – CONSTANT DEFLECTION
Technical References
ASTM D 395 Method B
Description
The CS-86B compression set apparatus consists of three flat plates between which the rubber specimens are compressed. Steel spacers for the required percentage of compression are placed on each side of the rubber specimens to control their thickness while compressed. Six bolts pass through the plates. These bolts are tightened so that the plates are drawn together until they come in contact with the spacers. The fixture is manufactured of polished chrome-plated steel. Dimensions: 4 x 7.5 inches.
Spacers are sold separately.
MODEL CS-86A-X COMPRESSION SET APPARATUS – CALIBRATED SPRING FORCE APPLICATION
Technical References
ASTM D 395 Method A
Description
The CS-86A-X features stainless steel construction and a three-post design for even loading. Load is applied via a heavy-duty spring (1/10″ deflection = 40 +/-2 pound load). The dial indicator is removable. The fixture can be placed in an oven.
MODEL CS-111 BALL REBOUND TESTER
Technical References
ASTM D 3574 Test H
Description
The CS-111 Ball Rebound Tester consists of a 1.5 inch inside diameter vertical clear plastic tube into which a 5/8 diameter steel ball weighing 16.3 grams is released by a magnet as shown in the schematic drawing. The steel ball is released so that it falls without rotation. Centering of the ball is assured by a recess at the base of a magnet. The height of the ball drop is 18 inches. The scale on the back of the tube is calibrated in percent as follows � every 5% a complete circle is scribed and every 1% a 120o arc is scribed.
The rebound of the steel ball of the specimen, as a percent of drop height, is the Ball Rebound Resilience value. The top of the ball is 18 5/8 inches above the surface of the foam. Thus ‘zero’ rebounds are defined on the column 5/8 of an inch (diameter of the steel ball) above the specimen surface. The specimen is centered at the base of the tube and the steel ball is then mounted in the recess at the base of the magnet, dropped and the maximum height of rebound is noted.
The test specimen is a 4 x 4-inch foam rubber piece not less than 2 inches thick with parallel top and bottom surfaces. Specimens less than 2 inches thick may be stacked without the use of cement or adhesives. Three specimens per sample are tested.
MODEL CS-187 RETRACTION APPARATUS
Technical References
ASTM D 1329
Description
The CS-187 is designed to rapidly evaluate the crystallization effects of rubber and rubber-like materials at low temperatures using a temperature-retraction (TR) procedure. This test allows easy comparison of the visco-elastic properties of various materials. The specimens are elongated, frozen to a non-elastic state, and released. The bath temperature is raised and readings are taken until the retraction is 75% complete. The CS-187 is designed for 350% elongation of a two-inch (50 mm) specimen and 125% elongation of a 4 inch (100 mm) specimen.
Contact Us
Have a question about one of our products or our company? We would love to talk with you! Reach us by phone, email, or our form.