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Filter Finder

Results for “309”

Type the model or part number printed on your filter, purifier, housing or O-ring. Dashes and spaces don’t matter. For O-rings you can also type an AS568 size (214, AS568-214) or the inside diameter x thickness (0.984 x 0.139 in, 25 x 3.5 mm).

We sell it Compatible replacements

Compatible with Hunter 30901

PadActivated carbon pad

Cross-referenced: our product is listed as compatible with this number

Fit details

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Compatible with Hunter 30903

PadActivated carbon pad

Cross-referenced: our product is listed as compatible with this number

Fit details

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Compatible with Hunter 30907

PadActivated carbon pad

Cross-referenced: our product is listed as compatible with this number

Fit details

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

Our cut-to-fit pad is listed for this model; trim to your old filter's size.

O-ring size CFS O-rings by size

Size catalog: standard AS568 sizes we can supply. 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.

CFS O-Ring AS568-309

Inside diameter0.412 in (10.46 mm)
Cross section0.210 in (5.33 mm)
Outside diameter0.832 in (21.12 mm)
  • Buna-N (nitrile) 70A10-pack from $5.99 · 25-pack $8.99 · 100-pack $30.99
  • Viton (FKM) 75A10-pack from $5.99 · 25-pack $11.99 · 100-pack $49.99
  • EPDM 70A10-pack from $5.99 · 25-pack $8.99 · 100-pack $29.99
  • Silicone 70A (orange)10-pack from $5.99 · 25-pack $9.99 · 100-pack $31.99

Not sure? Send us your model number and we will confirm the fit.