Product details
CFS replacement O-ring, Buna-N (nitrile) 70 durometer. Size AS568-240: 3.734 in ID x 0.139 in cross-section (94.84 mm x 3.53 mm), about 4.012 in (101.90 mm) outside diameter. Sold in packs of 3 or 6 rings.
Fit and part numbers
- Compatible with Culligan OR-150: Culligan WH-S200-C and 3M 3WH-STD-S01 / HDG2VS4 standard 10 in housings.
Measure your old ring first
Seal sizes vary by brand and by model year. Lay your old ring flat and measure the inside diameter and the thickness: it should be close to 3.734 in x 0.139 in. Old rings stretch or swell a little, so expect a small difference.
Wipe the groove clean and apply a thin film of silicone O-ring lubricant before fitting. Never use petroleum grease on a Buna-N ring.
Shipping
Ships in 3-5 business days.
CFS is an independent brand. These are compatible replacement O-rings, not OEM parts. Part numbers and brand names are used only to show fit.
Fits these models
Compatible with 3M: 3WH-STD-S01, HDG2VS4
Compatible with Culligan: OR-150, WH-S200-C
CFS compatible replacement. Brand names and part numbers are used only to show fit.
Before you order
Compare the model or part number and the dimensions shown in the product details with your current filter. If anything is unclear, contact us before ordering and we can help confirm the fit.
Shipping
Free shipping is included on every order.