RSF Door Gasket Kit – Opel / Focus 320 ST / Delta Fusion / Keystone (FO-GRK4/FO-GRK10/FO-GRK6)

(1 customer review)

USD $104.37

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SKU: FO-GRK4 Categories: , , Tags: , , , , ,

Product Description

This is a genuine replacement door gasket kit for several models of RSF wood burning fireplaces.  This RSF gasket kit ships new in its original packaging (it is not an aftermarket equivalent).

RSF Genuine Part Number: FO-GRK4

RSF Description:

  • Gasket: 3/4″ x 90″ long
  • Includes High Temperature Gasket Glue

Please note: This door gasket only comes in one size for all the models listed below. For some models, there will be excess gasket that you will need to cut off in order for it to fit.

Applicable Models:

  • RSF Opel 3 (Single Door Opel).  If you have a double door Opel , you require a different gasket (FO-FDGRK2 (old p/n 14.10.2)
  • RSF Opel3 Plus
  • RSF Opel Plus Keystone (Replaces part number FO-GRK10)
  • Focus 320 /Focus ST (Replaces part number FO-GRK6)
  • Delta Fusion (Replaces part number FO-GRK10)


The door gasket is a barrier between the doors and the face of the fireplace.  When the gasket starts to wear out, the unit will leak air and cause the fireplace to over fire which may lead to damage.

Installation Tips

Please ensure that you remove all debris from the gasket channel by using a wire brush or something else.  Its a cast iron door, you so can’t hurt it.  Drop a think bead of glue (not too much) to ensure gasket does not get hard.  Ensure ends are close together.

Note: Wood stove and fireplace door gaskets are also commonly referred to as “Door Sealers”


This genuine RSF Opel Door Gasket is in stock ready to ship.

Shipping Dimensions

Weight 2 lbs
Dimensions 12 × 12 × 6 in

Replacement parts come with a 90 day warranty unless otherwise stated.

All Gas or Pellet components must be installed by a licensed technician.
All Gas or Pellet component warranty claims must include installation receipt to qualify for warranty.

Please contact Online Store Support with any warranty questions.

1 review for RSF Door Gasket Kit – Opel / Focus 320 ST / Delta Fusion / Keystone (FO-GRK4/FO-GRK10/FO-GRK6)

  1. Jennifer Hall

    This gasket fit our Opel 3 door perfectly with no cutting required. Installation was very straightforward but removal of the old gasket silicone is difficult. It takes a lot of effort to remove previous dried silicone. There is no easy way so you just have to work away at it and clean the surface with TSP when done before applying your new gasket.

    • Mike Sewell

      Thank you for the review Jennifer! We find a wire brush can help get that dried silicone out of the channels, but it certainly can be a bit of work to get it cleaned right up!

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