MATERIALS SPECIFICATION and ENGINEERING

 

Material specifications and data tests sheets for all compounds are available upon request. PPAP documentation is available and pricing will be included with quotations when requested, pricing structure is as follows: 

PPAP Level 2 - no charge and includes PSW, dimensional report and material data sheet. 

PPAP Level 3 - $250.00 one-time engineering charge.

PPAP Level 4- charge is TBD, depending on customer requirements. 

We can engineering drawings based on your sample provided. Engineering fees for reverse engineering a print from a sample are:

RUSH (1-3 days) @ $40.00/hr

Standard (1-2 weeks) @ $30.00/hr

We will require approval of all prints we generate prior to beginning tooling. 

 

CA Prop 65 Statement

       In the vast majority of cases, the likeliness of AJRWeb, Inc products containing substances included on the California Proposition 65 list is very low. Our Rotary Shaft Seals have been tested and do NOT contain lead and phthalates. Because not all product and compounds have been been tested for every substance on the CA list, all of our products will be shipped with with a CA Prop 65 warning label, including oil seals. If you require specific information on any AJRWeb compound, please contact us with any questions or concerns. 

 

 

RoHS and REACH certification, NSF 61 and FDA certification is available for specific compounds upon request.

All product is supplied with a traceable batch and cure. 

 

 

Understanding ASTM Call-outs for o-rings, related seals and custom molded rubber seals

*not intended to replace actual ASTM standard, please refer to http://www.astm.org/Standards/D2000.htm for the official standard

Specification: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

Measurement Unit: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

M = Metric units will be used for tensile strength, temperature and tear strength.If no M present, Enlish units will be used

Grade number: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

Indicates grade level to which material will be subjected

Type and Class: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

Table below is for most common polymers used. In this example, the material is Nitrile

Classification System
D 2000 SAE J200
Material Designation (type and Class)
Type of polymer most often used
AA Natural Rubber, reclaimed rubber, SBR, butyl, EP polybutadiene, polyisoprene
AK Polysulfides
BA Ethylene propylene, high temperature SBR, butyl compounds 
BC Chloroprene polymers (neoprene), cm
BE Chloroprene polymers (neoprene), cm
BF NBR polymers
BG NBR polymers, urethanes
BK NBR (Buna N Nitrile)
CA Ethylene proplene
CE Chlorosulfinated polyethylene (Hypalon), cm
CH NBR polymers, epichlorohydrin polymer
DA Ethylene propylene polymers
DE CM, CSM
DF Polyacrylic (butyl-acrylate type)
DH Polyacrylic polymers, HNBR
EE AEM
EH ACM Polyacrylate
EK FZ
FC Silicone (high strength)
FE Silicones
FK Fluorinated silicones
GE Silicones
HK Fluorinated elastomers (Viton®,Fluorel, etc.)
KK Perfluoroelastomers

 

Hardness (durometer): ASTM D2000 M3CH 714 A25 B34 EO16 EO36 

Indicates durometer range in Shore A units, (+/- 5 points). In this example, the hardness is 70 +/- 5 durometer. 

Tensile strength: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

Indicates maximum tensile strength. In this example tensile strength required would be 14MPa

Additional requirements suffixes: ASTM D2000 M3CH 714 A25 B34 EO16 EO36

Suffixes relate to table below, the letter/number call-outs related to a specific material test and performance requirement per the grade number. Refer to the ASTM D 2000 official standard for expanded call-out requirements. In this example, the suffixes refer to a heat resistance test, a compression set tis, and two fluid resistance tests for oils and lubricants.  

Suffix Letter
Test Required
A Heat Resistance
B Compression Set
C Ozone or Weather Resistance
D Compression-Deflection Resistance
EA Fluid Resistance (Aqueous)
EF Fluid Resistance (Fuels)
EO Fluid Resistance (Oils and Lubricants)
F Low Temperature Resistance
G Tear Resistance
H Flex Resistance
J Abrasion Resistance
K Adhesion
M Flammabiity Resistance
N Impact Resistance
P Staining Resistance
R Resilience
Z Any special test requirement specified in detail

 




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