Products
Rubber compounds by family
If your print names a compound rather than a part, this is the page for it. Conquest Seal supplies the elastomer families the trade uses, in standard grades and in the AMS and MIL specification grades a drawing can call out. The compounds come from the compounders and molders we source from, with a data sheet on request. Tell us the compound or specification your print calls out, with the medium and the temperature, and a Conquest representative quotes to it and sends the maker's data sheet.
- Families
- FFKM, FKM, FVMQ, VMQ, HNBR, EPDM, NBR, AEM
- Hardness
- 30 to 96 Shore A across the families supplied
- Service temperature
- -73 C to 320 C by family on the Parker® ranges; FFKM -26 C to 320 C (Parker ORD 5700); named grades on file reach 327 C (Kalrez® 7075) and -42 C (Kalrez 0040), each on its maker's sheet
- Specifications
- AMS and MIL specification compounds on request
- Colors
- black and colored compounds by family
- Data
- compound data sheets on request
Each elastomer family has a job: FKM for fuels, oils and heat, EPDM for steam, water and ozone, silicone for wide temperature swings and clean service, HNBR for oil at higher temperatures, nitrile for general hydraulic and pneumatic work, FFKM where nothing else survives the chemistry. The compounds we supply come from the compounders and molders we source from, with AMS and MIL specification grades on request. Every lot ships with its certificate of conformance. Tell us the compound or specification your print calls out, with the media and the temperature, and we quote to it and send the maker's data sheet.
Whether you need a standard compound for a stocked O-ring or a specification grade for an aerospace or defense program, send the drawing, the specification and the quantity and we quote it.
Prints call out compounds by need: peroxide-cured EPDM for steam, low-temperature FKM for aerospace fuels, food-contact and medical grades where the documentation matters. Tell us the compound or specification your print calls out, with the media and the temperature, and we quote to it and send the maker's data sheet.
Kalrez is a trademark of Qnity Electronics; Parker is a trademark of Parker Hannifin Corporation. No affiliation or endorsement is implied.
Industries that buy rubber compounds by family
Frequently asked
Can a compound from one maker be crossed to another?
Only through the specification, never through the compound number. A cross is a match on polymer family, hardness and the tests the print calls out, an ASTM D2000 line callout or an AMS document, and the replacement compound's datasheet has to show the same results. A D2000 letter pair is an envelope rather than a material identity (BG covers both nitrile and polyurethane), so a letter match alone is not a cross.
What is a low-temperature fluorocarbon?
A fluorocarbon grade built for cold starts. Standard fluorocarbon runs from -26 C on the Parker ranges, while the low-temperature types reach -46 C and are the grades aerospace prints call out through AMS7379 or the M83485/1 family. They keep the fuel and heat resistance the family is chosen for.
Are colored compounds available?
Yes, in most families. The chart lists fluorocarbon in black, blue, brown, gray, green, red and tan, fluorosilicone in blue, green, red and yellow, EPDM in black, purple and red, and nitrile in black. Color is pigment: a ring is identified by its compound number and datasheet, never by its color.
Which compounds are made to AMS and MIL specifications?
Fluorocarbon to AMS7276 (70 to 80 Shore A) and AMS7259 (85 to 95 Shore A), the documents behind the M83248/1 and M83248/2 part families; FFKM to AMS7257, with a 75 Shore A peroxide-cured grade on the chart; fluorosilicone to AMS-R-25988 in the M25988/1 through M25988/4 classes; silicone to AMS7267, AMS3304 and AMS3337; and nitrile to AMS-P-25732 for the MS28775 family. Qualification belongs to the manufacturer that made the compound, and the manufacturer's certificate ships with every specification part.
How is compression set specified?
Through the B suffix of the ASTM D2000 callout, which sets the test temperature: B14 is 22 hours at 100 C, B16 22 hours at 150 C and B37 70 hours at 175 C, tested to ASTM D395 Method B. The datasheet then reports the percent set, and a lower number means the compound keeps more of its sealing force after long service. The suffix digit is a temperature code that follows a different ladder for the F (low-temperature) suffix, so B37 and F17 are not the same temperature.
Related guides
Send the compound or specification and the quantity
We quote the compound or specification your print calls out and send the maker's data sheet with the quote. A Conquest representative replies.
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