Product Materials


Filter and Membrane Housings

Part Material Makeup Discussion
Flowmatic Housings Primary Material: Polypropylene
Maximum Temperature: 125°F
Minimum Temperature: 40°F
O-ring: EPDM
Found in Countertop Filters, Undersink Filters, Garden Hose Filters, and residential Reverse Osmosis units.
Membrane Housings Primary Material: Polypropylene Found in our residential Reverse Osmosis units.
Pentek Housings Clear Housings: Styrene Acrylonitrile (SAN)
Opaque Housings: Polypropylene
Caps: Polypropylene
Button Assembly: 300-series Stainless Steel, EPDM, and Polypropylene
O-ring: Buna-N
Maximum Temperature: 125°F
Maximum Pressure: 125 psi (8.62 bar)
Opaque and clear housings for all 2.5" x 20" filters, 4.5" x 9.75" filters, and 4.5" x 20" filters, including our Compact Whole House Filters, Large Garden Hose Filters, and “Classic” Pura ultraviolet purifiers (manufactured before 2009).
Pentek High Temperature Housings Primary Material: Glass Reinforced Nylon
O-ring: Viton
Max Temperature: 160°F
Found in our high-temperature washing machine filters.

Cartridges and Membranes

Part Material Makeup Discussion
Pentek Chlorplus Caps: Polypropylene
Inner & Outer Wrap: Polyolefin
Netting: Polyethylene
Gasket: Santoprene
Temperature Rating: 40–125°F
Available sizes:
2.5" x 9.75": FC027,
4.5" x 20": FC411.
Pentek EP Series Caps: Polypropylene
Inner & Outer Wrap: Polyolefin
Netting: Polyethylene
Gaskets: Buna-N
Temperature Rating: 40–180°F
Available sizes:
2.5" x 9.75":
FC800 (0.5 micron), FC801 (10 micron),
2.5" x 20": FC803,
4.5" x 20": FC806.
Pentek CBC Series Caps: Polypropylene
Inner & Outer Wrap: Polyolefin
Netting: Polyethylene
Gaskets: Buna-N
Temperature Rating: 40–180°F
Available sizes:
4.5" x 20": FC805.
Pentek RFC Series Caps: Polypropylene
Inner & Outer Wrap: Polyolefin
Netting: Polyethylene
Gaskets: Buna-N
Temperature Rating: 40–180°F
Available sizes:
4.5" x 20": FC409.
Pentek DFX Series Caps: Polypropylene
Exterior Media: Polypropylene Polyspun
Interior Media: Carbon Block
Gaskets: Buna-N
Temperature Rating: 40–180°F
Available sizes:
2.5" x 9.75"
Pentek CC Series Filter Media: GAC,
End Caps: Polystyrene,
Post-Filter: Spun Polypropylene,
Outer Casing: Polystyrene,
Expansion Pad: Polypropylene,
Gasket: Buna-N (top), Santoprene (bottom),
Temperature Rating: 40–125°F
Available sizes:
2.5" x 9.75": FC028.
Flow Pro Melt Blown Sediment Melt Blown Polypropylene
Maximum Temperature: 140°F
Available sizes:
2.5" x 9.75":
FC103 (1 micron), FC107 (5 micron),
2.5" x 20":
FC251 (1 micron), FC255 (5 micron), FC261 (20 micron),
4.5" x 10": FC352 (5 micron),
4.5" x 20": FC452 (5 micron).
Flow Max Pleated Sediment Filter: Cellulose-free Synthetic ("100% synthetic fibers, with no binders or additives to leave a residue, foam or contaminate.")
End Caps: Plastisol (PVC)
Center Tube: Polypropylene
Temperature Rating: 40°F - 140°F
Available sizes:
2.5" x 9.75":
FC100 (0.35 micron), FC102 (1 micron), FC101 (1 micron absolute), FC106 (5 micron),
2.5" x 20":
FC250 (0.35 micron), FC252 (1 micron), FC254 (5 micron), FC260 (20 micron),
4.5" x 9.75":
FC350 (1 micron), FC351 (5 micron), FC354 (20 micron),
4.5" x 20":
FC457 (1 micron), FC451 (5 micron), FC454 (20 micron).
String Wound Sediment Polypropylene Fibers
Maximum Temperature: 140°F
Available sizes:
2.5" x 9.75":
FC104 (1 micron), FC108 (5 micron), FC109 (10 micron),
2.5" x 20":
FC253 (1 micron), FC256 (5 micron), FC258 (10 micron), FC257 (20 micron), FC259 (50 micron),
4.5" x 9.75":
FC353 (5 micron), FC357 (10 micron), FC355 (20 micron), FC356 (50 micron),
4.5" x 20":
FC450 (1 micron), FC453 (5 micron), FC455 (20 micron), FC456 (50 micron).
High Temperature String Wound Sediment Polypropylene Fibers
Center Tube: Stainless Steel
Maximum Temperature: 200°F
Available sizes:
2.5" x 10": FC105 (5 micron).
Media-Based Cartridges Polypropylene Shell Available sizes:
2.5" x 9.75":
FC007 (Coconut Shell Carbon / Activated Alumina), FC008 (Activated Carbon / KDF 55), FC011 (Activated Alumina), FC019 (Centaur Carbon), FC021 (Activated Carbon), FC020 (Centaur Carbon / KDF 85), FC010 (Nitrate Removal Resin), FC022 (Activated Carbon / Calcite), FC018 (Calcite), FC012 (Activated Carbon / Phosphate), FC024 (Cation Softening Resin), FC006 (De-ionizing Resin), FC017 (Birm), FC005 (Arsenic), FC029 (Filox),
2.5" x 20":
FC206 (Centaur Carbon / KDF 85), FC205 (Centaur Carbon / KDF 55), FC204 (Centaur Carbon), FC207 (Water Softening Resin),
4.5" x 9.75":
FC308 (Calcite), FC305 (Cation Softening Resin), FC300 (Centaur Carbon),
4.5" x 20":
FC407 (Cation Softening Resin), FC408 (Centaur Carbon).

Reverse Osmosis Membranes & Parts

Part Material Makeup Discussion
Membrane Housings Primary Material: Polypropylene Found in our residential Reverse Osmosis units.
RO Tanks Diaphragm: Butyl
Liner: Polypropylene
Found in our residential Reverse Osmosis units.
Payne Shutt-off Valve Primary Material: Acrylonitrile Butadiene Styrene (ABS)
Outer Ring: Stainless Steel
Found in our residential Reverse Osmosis units.

Mineral Tanks

Part Material Makeup Discussion
Structural Poly Glass
Mineral Tanks
Inner Shell: Polyethylene Tanks with gravel underbed used in our whole house filters.

Miscellaneous Parts and Fittings

Part Material Makeup Discussion
Tubing Primary Material: Polyethylene
Temperature Rating: -42°F to 125°F
Found in Undersink Filters and residential Reverse Osmosis systems.
Countertop Tubing Primary Material: Polyvinyl Chloride (PVC)
Maximum Temperature: 175°F
Flexible tubing that connects a faucet diverter valve to one of our countertop units.
John Guest Fittings and Valves Primary Material: Polypropylene
O-rings: EPDM
Maximum 150 psi at 70°F
Maximum 60 psi at 140°F
Quick connect fittings, found in Countertop Filters, Undersink Filters, and residential Reverse Osmosis units.
Jaco Fittings Primary Material: Nylon
Temperature Rating: -40° to 200°F.
Found in our residential Reverse Osmosis units.
Mur-Lok Fittings Primary Material: Polypropylene
O-rings: EPDM
Maximum 150 psi @ 70°F
Maximum 60 psi @ 140°F
Found in our residential Reverse Osmosis units.
Payne Shutt-off Valve Primary Material: Acrylonitrile Butadiene Styrene (ABS)
Outer Ring: Stainless Steel
Found in our residential Reverse Osmosis units.
RO Tanks Diaphragm: Butyl
Liner: Polypropylene
Found in our residential Reverse Osmosis units.

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