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Rubber Smooth Bore Transfer Hose

FlexChem® is one of the industry's most versatile, rubber covered FEP-lined transfer hoses. It is designed for full flow applications that require maximum flexibility, minimum weight, and high purity. This smooth bore FEP hose with its EPDM rubber cover is easy to handle and resists abrasion and chemical attack while it facilitates easy cleanability. The smooth, rubber cover makes it easy for operators to safely grip and handle the hose.

FlexChem hose incorporates a FEP, smooth bore design which gives it superior flexibility. Through a proprietary process, the FEP liner is bonded, covered and reinforced with multi-layered rubber, spiral-wound polyester cords and a double helix wire which gives it superior flexibility. Grounding is possible via its internal wires.

This wire helix "back bone" also supports full vacuum service. FlexChem series hose is available in white FEP or a PTFE conductive black liner where electrostatic dissipation is required. To ensure continuous fluid contact with FEP throughout the hose assembly, the FEP liner can be factory flared through flanges, sanitary fittings, male and female cams.

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Product Features & Benefits

  • CORROSION RESISTANT: FEP & PTFE are fully resistant to the broadest range of industrial chemicals and has a zero-corrosion rate and lower life cycle costs.
  • CLEANABLE: Non-Stick, low porosity tube does not trap bacteria and can be cleaned with steam, detergents, caustics or solvents.
  • SANITARY: FDA- approved materials meet or exceed 3A requirements.
  • COMPATIBLE: Will not contaminate or impart a taste, color, or odor to any media.
  • FLEXIBLE: The most flexible rubber covered hose in the industry. Does not fatigue or stress corrode like metal hose.
  • DURABLE: Designed for extended use in hostile environments involving severe chemical, thermal, and mechanical stresses. Does not suffer aging or embrittlement, even with extreme thermal cycling.
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Hose Cover Options

  1. Scuff Sleeve

    Protects hose exterior from damage when dragged over rough surfaces.

  2. Fire Sleeve

    Protects hose from extreme exterior temperatures. Used for insulating hose. Protects personnel who handle the hose from extreme interior temperatures.

  3. Polyolefin

    Provides a smooth, cleanable covering over braided hose.

  4. Armor Guard

    Protects hose from kinking by not allowing handler to exceed the bend radius.

  5. Spring Guard

    Provides kink resistance and protects hose exterior from scuffing and damage when dragging over rough surfaces.

Hose End Connections

Over 40 standard fitting styles are manufactured including: flanged, sanitary JIC, NPT, cam lock. All fittings feature PureFlex's exclusive high performance barb design.

Surface Finishes

Ultra smooth internal surface finishes meet or exceed Pharmacopoeia Class VI, FDA, USDA and 3A standards.


The thick, FEP tube can be passed through the end fitting and flared radially outward against the sealing face of the following fittings: (6) Sanitary, (7) Flanged, (8) Female Cam, and Male Cam.

*Flexchem hoses with Flare-Thru end connections are not rated for any vacuum service.

Electrically Heated Option

Electrically heated options may be applied to many of the hose assemblies available from PureFlex®. Our superior insulations and precisely applied heating elements provide the most temperature-stable heated hoses on the market. PureFlex heated hoses are excellent for maintaining viscosity control, freeze protection, and dispensing temperature-sensitive media. Temperature options available from ambient to 450°F (hose selection dependent).

If interested in learning if the electrical heated option can be applied to your specific hose requirements, please complete the Electric Heating Option Form and submit to  

Technical Details

  • Applications: Designed for full flow applications that require maximum flexibility, minimum weight and high purity
  • Liner material: White FEP or a PTFE conductive black liner
  • Cover: Rubber
  • Size range: 1/2" to 6"
  • Pressure rating: Full vacuum to 1400 PSI
  • Temperature range:-40°F (-40°C) to +350°F (177°C)
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  • Acid Transfer
  • Pickling
  • Reverse Osmosis
  • Steam Transfer
  • Molding Equipment
  • Adhesives
  • Air Actuation
  • Sanitary Transfer
  • Purification Systems
  • Centrifuges
  • Extrusion Presses
  • Caustic Wash


Temperature Range: -40°F (-40°C) to +350°F (177°C)

I.D. Nominal (IN)

Working Pressure
Min. Burst
Vacuum Rating (in. Hg) Min. Bend RADIUS (in) Weight Per Foot (lbs)
1/2 0.95 350 1400 29.9 2.65 0.34
3/4 1.25 350 1400 29.9 3.50 0.51
1 1.55 450 1800 29.9 4.00 0.72
1-1/4 1.75 375 1500 29.9 8.50 0.89
1-1/2 2.13 350 1400 29.9 10.50 0.99
2 2.68 300 1200 29.9 13.00 1.38
3 3.88 250 100 29.9 21.00 2.46
4 5.0 175 700 29.9 39.00 3.50
6 7.13 100 400 29.9 58.00 4.75


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This resource is intended as a guideline to be used with all available information to determine suitability of material selection. We suggest thorough research which should include known applications when determining material. The information contained herein is provided only as a guide for the use of ANDRONACO INDUSTRIES products.

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