What is O-Ring Shelf Life?


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		ARP 5316 Elastomer Shelf Life Recommendation The Society of Aerospace Engineers (SAE) issued Aerospace Recommended Practice (ARP) 5316. It was issued in 1998 to supersede MIL-HDBK-695 as the aerospace industry standard in governing o-rings and molded seals shelf life. ARP 5316 is often used as a guideline in determining useful shelf life of elastomers used in other industries.

Recommended Shelf life

5 years: Polyurethane (millable), SBR, Natural Rubber, Polybutadine, Polyisoprene
15 years: Nitrile, Neoprene, HNBR, Polyacrylate, Butyl
Unlimited: Ethylene Propylene, Fluorocarbon, Perfluorinated Elastomer, Silicone, Tetrafluoroethylene Propylene (Aflas®), Fluorosilicone.

Elastomer	ASTM	Shelf Life
Aflas®		Unlimited
Butyl Rubber, Isobutylene Isoprene	IIR	15 Years
Chloroprene (Neoprene®)	CR	15 Years
Epichlorohydrin (Hydrin®)	ECO	NA
Ethylene Acrylic (Vamac®)	AEM	15 Years
Ethylene Propylene, EPDM or EP	EP	Unlimited
Fluorocarbon (Viton®)	FKM	Unlimited
Fluorosilicone	FVMQ	Unlimited
Hydrogenated Nitrile, HNBR or HSN	HNBR	15 Years
Nitrile (Buna-N or NBR)	NBR	15 Years
Polyacrylate	ACM	15 Years
Polyurethane (Polyester or Polyether)	AU / EU	5 Years
Silicone	VMQ	Unlimited
Styrene Butadiene (Buna-S)	SBR	5 Years

Series	Dash Number	Material Spec	Duro	Shelf Life
Perfluorocarbon (FFKM)				Unlimited
AMS7257	-001 THRU 932	AMS7257	75
Fluorocarbons (FKM)				Unlimited
AS3084	-01 THRU -32	AMS7276	75
AS3085	-001 THRU -475	AMS7276	75
AS3208	-01 THRU -32	AMS7276	75
AS3209	-001 THRU -475	AMS7276	75
MS9387	-001 THRU 932	AMS7278	75
AS3581	-001 THRU 932	AMS7259	90
MS9970	-001 THRU 932	AMS7279	90
AS43013	-001 THRU -475	DTD5613A	80
AS43003	-904 THRU 932	DTD5613A	80
M83248/1	-001 THRU -932	MIL-R-83248 TY1 CL1	75
M83248/2	-001 THRU -932	MIL-R-83248 TY1 CL2	90
M83485/1 (GLT Type)	-001 THRU -932	MIL-R-83485	75
M83485/1 (GLT Type)	-001 THRU -932	AMS-R-83485	75
New	-001 THRU -932	AMS7XXX (-40 FKM)	75
MA3352	A0018-E4000	AMS7276	75
MS17413	-001 THRU -932	MIL-R-83248 TY1 CL1	75
NAS1523( ) XX E	-04 THRU -32	MIL-R-83248/1 CL1	75
Fluorosilicones (FVMQ)				Unlimited
M25988/1	-001 THRU -932	MIL-R-25988, CL1GR70	70
M25988/2	-001 THRU -932	MIL-R-25988, CL3GR75	75
M25988/3	-001 THRU -932	MIL-R-25988, CL1GR60	60
M25988/4	-001 THRU -932	MIL-R-25988, CL1GR80	80
AS9966 (was MS9966)	-01 THRU -32	AMS7273	75
AS9967 (was MS9967)	-001 THRU -475	AMS7273	75
NAS1523( ) XX R	-04 THRU -32	MIL-R-25988, CL1GR60	60
Silicones (VMQ)				Unlimited
AS3582	-001 THRU -932	AMS3304	70
MS9068	-004 THRU -460	AMS3304	70
AS9385 (was MS9385)	-01 THRU -32	AMS7267	75
AS9386 (was MS9386)	-001 THRU -475	AMS7267	75
NAS1523( ) XX W	-04 THRU -32	AMS3304	70
NAS1523( ) XX H	-04 THRU -32	AMS7267	75
Nitriles (NBR)				15 Years
MS28775	-001 THRU -932	MIL-P-25732	70
MS28775	-001 THRU -932	AMS-P-25732	70




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