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CCSi UltraLife Specimen Mold: ASTM D3629
UltraLife ASTM D3629 Mold
D3629 UltraLife Specimen Mold
UltraLife Specimen Molds by CCSi
CCSi manufactures these specimen molds for measuring the cut growth resistance of precut vulcanizate specimens, under controlled conditions of environment, temperature, frequency, and severity, as described in ASTM D3629Standard Test Method for Rubber Property-Cut Growth Resistance.”
CCSi manufactures these specimen molds for measuring the cut growth resistance of precut vulcanizate specimens, under controlled conditions of environment, temperature, frequency, and severity, as described in ASTM D3629Standard Test Method for Rubber Property-Cut Growth Resistance.”
The T-shaped, grooved specimens are pierced, and mounted circumferentially along the periphery of rotating disks and bent or flexed as they strike against freely rotating deflector bars at a controlled frequency. The growth of the cut is measured and expressed as the number of kilocycles required for a 5-fold or 10-fold increase in the cut length.
This test method, referred to as the TEXUS flex test or TEXUS cut growth test, is useful for development studies of polymers, compounding variables, and temperature on cut growth resistance. It has also been shown to relate qualitatively to tire cut growth.
CCSi UltraLife molds are designed, engineered, and manufactured to produce high quality specimens, over an extended service life!
CCSi UltraLife Piercing Apparatus: ASTM D3629
ASTM D3629 Specimen Piercing Apparatus
ASTM D3629 Piercing Apparatus

ASTM D3629 Specimen Piercing Apparatus
Piercing Tool
ASTM D3629 procedures require that the test specimen be punctured by a special piercing tool, which is mated to a specimen holder specifically designed for the purpose. CCSi provides the specimen piercing tool and specimen holder, together listed as the specimen piercing apparatus, although they are available individually.
The CCSi specimen piercing apparatus is of a unique and innovative design. The platen of the specimen holder has a circular orifice containing a compression molded polypropylene disc, which acts as a receiver for the piercing tool. Upon penetration of the specimen, there is no metal-to-metal contact of the constituent parts, as is the case with typical designs.
This prolongs the life of both the specimen holder and piercing tool, while improving test determinations by maintaining a sharply formed piercing edge and not deforming the receiving platen.
The receiver for the compression molded polypropylene discs contains a ‘bored-through’ orifice facilitating the disc's replacement. The contact surfaces of the poly discs are flat and parallel and may be used on either side, further improving cost effectiveness.
CCSi UltraLife Specimen Molds: Quality Manufacturing
CCSi UltraLife molds are manufactured from homogenous, solid, high carbon content A2 mold steel. Each undergoes precision grinding and CNC (Computer Numerical Control) machining to exacting requirements. The mold cavities are expertly honed and hand polished, after which the mold is industrial chrome plated.
Precision grinding ensures a parallel surface profile of the platens and CNC machining provides ultra-close dimensional tolerances, while the honing and polishing processes guarantee smooth, true specimen cavities. The durable, hard chrome finish resists the corrosive and adhesive effects of most compounds, greatly improving overall durability and ease of maintenance.
The CCSi UltraLife mold platens are thicker than standard molds, providing superior heat and pressure distribution, as well as extending the mold's useful life by resisting distortion. This also allows the overflow recesses to be deeper, reducing problems associated overfill. The platens are positively positioned with precision guide pins and receivers ... assuring precise closure!
CCSi UltraLife Specimen Molds: Innovative Design
CCSi UltraLife molds feature a unique cam-action hinge design which improves the critical distribution of pressure. Typical ‘fixed-hinge' designs cause material to flow, outwardly, from this constraining point. This uneven application of pressure may cause excessive overfill, or cavity voids. The cam-action hinge design has all of the advantages of ‘stacked plate’ molds, combined with the convenience of ‘fixed-hinge’ designs! NOTE-1
The handles are manufactured from 304 stainless steel (a chromium - nickel austenitic alloy) and contain integral support pins. This allows the handles to rotate, which facilitates opening the mold. The handles are ergonomically positioned to ease placement and removal from the heated laboratory press. NOTE-1
Large triangular pry slots are located at the corners, opposite the cam-action hinges. These further facilitate mold opening and reduce the occurrence of cavity damage from improperly positioned tools.
CCSi UltraLife Specimen Molds: Features
The CCSi ASTM D3629 Specimen Molds Feature:
  1. Exclusive UltraLife engineering;
  2. Designed with advanced 3D solid modeling;
  3. Manufactured using computerized systems and techniques;
  4. CNC (Computer Numerical Control) 4 axis machining;
  5. Precision ground;
  6. Expertly honed;
  7. Finely polished;
  8. High carbon content A2 mold steel;
  9. Thicker plates resist warping, distribute heat and pressure evenly;
  10. Cam action hinges prevent uneven closure;
  11. Industrial chrome plate finish;
  12. 304 stainless steel rotating handles ease opening, closing and handling;
  13. Deep overflow recesses (flash pockets) reduce overfill problems;
  14. Precision locator pins & receivers assure positive alignment;
  15. High strength fasteners resist the effects of strain and stress;
  16. Temperature probe orifices may be added for profiling;
  17. Optional finishes are available for highly corrosive compounds.
Available in:
  1. ASTM D3629 UltraLife 10 Cavity Mold;
  2. Other cavity quantities are also available by special order.
Also Available:
  1. Specimen Piercing Apparatus;
  2. Poly Inserts for Specimen Piercing Apparatus.

NOTE-1 handles are optional and hinges are not offered with the D3629 design.
CCSi UltraLife ASTM D3629 Specimen Molds: Specifications & Pricing
Part Number Configuration Specimen Description
CCS-D3629-Pa D3629 Specimen Piercing Apparatus Available by Special Request
CCS-D3629-Ps D3629 Specimen Holder
CCS-D3629-Pt D3629 Specimen Piercing Tool
CCS-D3629-Pi D3629 Polypropylene Inserts (50 pk.)
CCS-MD3629-10 D3629 10 Cavity, 2 Plate Specimen Mold Body: 25.4 x 38.2 x 4.8 mm
Tab End: 25.4 x 12.7 x 6.4 mm
Please Request a Quotation for current pricing and delivery.

Index Terms: specimen mold, molds, ASTM D3629, D3629, Standard Test Method for Rubber Property - Cut Growth Resistance, cut growth, rubber, deterioration, Texus flexing machine, Texus flex test, Texus test, Texus flex, Texus flex deterioration, Texus cut growth, rubber deterioration, cut growth using Texus flexing apparatus, piercing tool, TEXUS, Tex US, flex tester, tire cut growth.
Copyright © 2006 CCSi, Inc. • All Rights Reserved • Published August, 2006
Corporate Consulting, Service & Instruments, Incorporated
221 Beaver Street • Akron, Ohio 44304 USA
Telephone: 800.742.8535 / 330.376.3600 • Facsimile: 800.229.9329 / 330.376.8500
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