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Aerospace & Defense

When missions and lives depend on the proper functioning of a tiny seal,
specifying the right product becomes especially critical. Parco is one of a few manufacturers approved to supply Qualified Products List (QPL) O-rings for aerospace and defense applications. Parco offers O-rings and custom molded seals to meet various military and aerospace specifications.

Below is a list of Parco's compounds for current military and aerospace specifications. If your specification does not match one of those listed below, it may be outdated. Contact us for more information or to request samples. You can also request a quote online for Parco's aerospace and defense seals.

Please see our Military & Aerospace O-rings brochure for additional information.

Part Number	Drawing	Specification	Parco Compound
N/A	N/A	AMS 3209	3110-70
N/A	N/A	AMS 3242	0318-80
N/A	N/A	AMS 7257	8082-75
AS3581	AS3581	AMS 7259*	9009-90
AS3569	AS3569	AMS 7270*	4466-70
AS3578	AS3578	AMS 7271*	4465-65
AS3570	AS3570	AMS 7274	0259-70
AS3208	AS3208	AMS 7276*	9266-75 & 9009-75
AS3209	AS3209	AMS 7276*	9266-75 & 9009-75
MS29512	AS29512	AMS P 5315*	4457-65
MS29513	AS29513	AMS P 5315	4457-65
MS28778	AS28778	AMS P 5510*	4081-90
M83461/1	AS83461/1	AMS P 83461*	4367-70
M83461/2	AS83461/2	AMS P 83461*	4367-70
MS29561	AS29561	AMS R 7362 Ty 1	4043-70
M83485	AMS-R-83485/1	AMS R 83485 Ty 1	9066-75
M25988/3	MIL-R-25988/3	MIL DTL 25988 Ty 1 Cl 1 Gr 60	1902-60
M25988/1	MIL-R-25988/1	MIL DTL 25988 Ty 1 Cl 1 Gr 70	1933-70 & 1903-70
M25988/2	MIL-R-25988/2	MIL DTL 25988 Ty 1 Cl 3 Gr 75	1904-75
MS25988/4	MIL-R-25988/4	MIL DTL 25988 Ty 1 Cl 1 Gr 80	1905-80
N/A	N/A	MIL G 21569 Cl 1 Gr 1	4456-70
M22050-1	N/A	MIL G 22050	5714-65
MS28775	AS28775	MIL P 25732*	4067-70
N/A	N/A	MIL P 82745	4456-70
N/A	N/A	MIL PRF 1149 Ty 1 Cl 1	0376-50
N/A	N/A	MIL PRF 1149 Ty 1 Cl 5	2159-50
N/A	N/A	MIL PRF 1149 Ty 2 Cl 5	2159-60
N/A	N/A	MIL PRF 6855 Cl 2A Gr 60	0376-60
N/A	N/A	MIL PRF 6855 Cl 1 Gr 40	2159-40
N/A	N/A	MIL PRF 6855 Cl 1 Gr 60	2159-60
N/A	N/A	MIL PRF 6855 Cl 2A Gr 80	3118-80

^{*Specification requires the manufacturer to be on the Qualified Products List (QPL).}

Below is a list of Parco's most popular compounds for the military and aerospace industry. If you need additional help selecting a material, use Parco's Compound Wizard to search our compound library.

Compound	Elastomer	Color	Description
1933-70	Fluorosilicone	Blue	70-durometer fluorosilicone; high-temperature and compression set resistant; AMS R 25988 and MIL R 25988 compliant.
4067-70	Nitrile	Black	70-durometer nitrile; low-temperature and oil resistant; MIL P 25732 compliant; QPL-listed.
4081-90	Nitrile	Black	90-durometer nitrile; low-temperature resistant; MS 28778 and AMS P 5510 compliant.
4367-70	Nitrile	Black	70-durometer nitrile; low-temperature resistant; MIL P 83461 compliant; QPL-listed.
4457-65	Nitrile	Black	Low-temperature and fuel resistant; AMS P 5315 compliant; QPL-listed; 65-durometer nitrile.
9066-75	Fluorocarbon	Black	75-durometer fluorocarbon; peroxide-cured; low-temperature resistant; AMS R 83485.
9266-75	Fluorocarbon	Black	75-durometer fluorocarbon; high-temperature resistant; AMS 7276 and AMS R 83248 and MIL R 83248 compliant; QPL-listed.