Standard AS568 O-ring

AS568-366 O-Ring, 7.225 x 0.210 in (183.52 x 5.33 mm)

The AS568-366 O-ring (dash 366, also written 2-366) has an inside diameter of 7.225 in (183.52 mm), a cross section of 0.210 in (5.33 mm), nominal 3/16 inch, and an outside diameter of 7.645 in (194.18 mm). We supply it in Buna-N (nitrile), Viton (FKM), EPDM or Silicone, in packs of 10, 25 and 100.

Size

AS568 size-366
Inside diameter (ID)7.225 in (183.52 mm)
Cross section (CS)0.210 in (5.33 mm), nominal 3/16 in
Outside diameter (OD)7.645 in (194.18 mm)

Rubber and pack prices

Rubber10-pack25-pack100-pack
Buna-N (nitrile) 70AGood for water, air and petroleum oils; the usual choice for filter housings.$10.99Request a quoteRequest a quote
Viton (FKM) 75AGood for heat, fuels and many chemicals.$54.99Request a quoteRequest a quote
EPDM 70AGood for hot water, steam and chlorinated or chloraminated water.$17.99$49.99Request a quote
Silicone 70A (orange)Good for a wide temperature range and food-contact use.$19.99$54.99Request a quote

A size match is not a fit claim for your equipment. Some sizes ship from stock; others have a 2-3 business day lead time before they ship. Not for oxygen, medical, aviation, scuba or other safety-critical use.

Not sure of your size?Measure the inside diameter and the thickness of your old O-ring, or send us the part number, and we will match it.Contact usSearch sizes in the Filter Finder