O-Ring

2643-820-12 ITEM 17

(NSN) National Stock Number

5331-00-167-5157

Federal Supply Classification

5331 O-Ring

Item Name Code

47946

Schedule B Code

4016930000

Summary

2.645 inches nominal outside diameter, -20.0 deg fahrenheit and 400.0 deg fahrenheit temp rating, 0.205 inches minimum and 0.215 inches maximum cross-sectional height, 2.207 inches minimum and 2.243 inches maximum center hole diameter, 125 maximum elongation percentage, 75.0 shore durometer a nominal hardness rating

DAC	HCC	DMIL	RNCC
5	-	-	C

RNVC	SADC	MSDS	RNAAC
1	AC	-	ZZ

Identification

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

INC	FIIG	Concept	Condition
47946	A510X0	-	1

Specifications

Outside Diameter

2.645 inches nominal

Details

The length of a straight line which passes through the center of an item,and terminates at the outside circumference.

Temp Rating

-20.0 deg fahrenheit and 400.0 deg fahrenheit

Details

A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.

Cross-Sectional Height

0.205 inches minimum and 0.215 inches maximum

Details

A measurement from the bottom to the top of a cross section,in distinction from depth.

Center Hole Diameter

2.207 inches minimum and 2.243 inches maximum

Details

The length of a straight line which passes through the center of the center hole,and terminates at the circumference.

Elongation Percentage

125 maximum

Details

The percentage the item will stretch.

Hardness Rating

75.0 shore durometer a nominal

Details

A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.

Material

rubber fluorocarbon class fpm

Details

The chemical compound or mechanical mixture properties of which the item is fabricated.

Master-Cross Reference List

Part	CAGE	DAC	HCC	RNCC	RNVC	MSDS	RNAAC
ARP568-331	D9182	6	-	C	1	-	ZZ
AS568-331MILR83 248	D9182	6	-	C	1	-	ZZ
L9930405	D9182	6	-	C	1	-	ZZ
M83248-1-331ES	H2313	3	-	5	9	-	ZN
2643-825-91 ITEM 32	96169	5	-	C	1	-	ZZ
H696-1602-77	96169	5	-	C	1	-	ZZ
522 5489362 REV	53711	6	-	C	1	-	ZZ
5489362 FIND 8	53711	6	-	C	1	-	ZZ
563-7067896-77	53711	5	-	C	1	-	ZZ
845-7108795 ITEM 17	53711	5	-	C	1	-	ZZ
845-7286651 ITEM 32	53711	5	-	C	1	-	ZZ
R72560	75755	5	-	5	9	-	KZ
M83248-1-331ES	06383	5	-	5	9	-	ZZ
2-331V0747-75	02697	3	-	5	9	-	ZZ
2-331V1164-75	02697	3	-	5	9	-	ZZ
2-331V1226-75	02697	3	-	5	9	-	ZZ
AMS7276G	0U583	E	-	5	9	-	ZZ
AS3209-331	0U583	E	-	3	2	-	ZZ
SAE-AMS7276	0U583	E	-	3	1	-	ZZ
AMS7276G	81343	E	-	5	9	-	ZZ
AS3209-331	81343	E	-	5	9	-	ZZ
NAS1593-332	80205	5	-	C	1	-	KE
M83248/1-331	81349	4	-	5	9	-	KZ
MILR83248	81349	4	-	5	9	-	SE