The originators of GFM Packings and innovators in sealing technology since 1942

  Rains-Flo GFM® Packings are available in 4 forms:

  1. Sealing System Sets – Cut to length rings in the correct ratio of black and red for a specific application. Sold by the set or in standard shipping boxes. Each set contains the specified number of rings required to fill the stuffing box, plus additional rings for add-a-ring maintenance.
  2. Coils - Cut your own rings to fit a variety of shaft sizes throughout your plant. Sold in standard dispenser boxes containing 20 lineal feet for packing sizes 3/16" and larger.
  3. Putty-Pac® - An adaptable putty form for valves, pumps and small equipment which uses 1/4" or smaller packing. Packaged in 2 lb. net wt. cans.
  4. Verti-Pac® - bulk form for vertical valve stems, pump shafts, and polish rods which use 3/8" and larger packing sizes. Packaged in 2.5, 5, 10, and 25 lb. net wt. cans.


 Rains-Flo Sealing System Sets have given many users a 300% increase in pump packing and shaft/sleeve life on their industrial equipment, while greatly reducing leakage, when compared to conventional braided packing. Rains-Flo Manufacturing, Inc., has been actively supplying the Sealing Systems to industrial customers since 1942. 

Rains-Flo pre-cut Sealing Sets are a combination of GFM (Granulated, Flowable, Material) and carefully chosen braided packings. This packing sets up into a self-lubricating, bearing-like seal. Due to the nature of the solid structure within GFM when the gland is tightened, the gland forces are transmitted to the stuffing box base. These forces then activate the Rains-Flo braided collars at the stuffing box base, which allows for sealing control to begin at that point. Rains-Flo Sealing System Sets can significantly improve sealing performance, give longer packing life, and have the exclusive "Add-A-Ring" maintenance feature where packing is replenished instead of being readily replaced. Rains-Flo Sealing System Sets can also dramatically reduce wear of moving parts, and is comparably priced with braided packing. 

 The high lubricant content of the Rains-Flo GFM Packings keep the braided collars from drying out, keeping them lubricated and resilient. The GFM Packings are also heat conductive rather than heat insulating like braided packing. A primary advantage of Rains-Flo GFM type packing is, if overtightened,they will just increase lubrication rather than groove the shaft/sleeve. 

Rains-Flo pre-cut Packing Sets contain sufficient material to fill the stuffing box, plus extra rings for later maintenance. A color-coded "Ring Placement Diagram" is supplied with each set to insure proper installation. 

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