Circular, watertight, heat-sealed bellows

Watertight circular bellows

The thermo-welded watertight circular bellows are used when watertight protection is required over the parts to be protected (for example screws, stems, etc.) against contamination of coolant liquids. They have good resistance to chemicals and are heat compatible with the materials used.

The thermo-welded watertight circular bellows can be supplied in the most diverse shape structures after setting up equipment of modest value (if not already existing in our warehouse).

Data

Type A fixing schemes

Circular, watertight, heat-sealed bellows

Bellows with the type A fastening system have with collar and a flange

Bellows data:

Ø e. soff. = Circular bellows outer diameter
Ø i.c. = Internal collar diameter
Ø i. soff. = Bellows internal diameter
Ø i.f. = Internal flange diameter
Ø int. holes = Flange hole centre-to-centre diameter
Ø e. f = Flange outer diameter
P.A. = Open parcel
P.C. = Closed parcel
Corsa = P.A. – P.C.
AP = Open step
X = Bellows fold height

Type B fixing schemes

Circular, watertight, heat-sealed bellows

Bellows with type B fastening system have two collars

Bellows data:

Ø e. soff. = Circular bellows outer diameter
Ø i.c. = Internal collar diameter
Ø i. soff. = Bellows internal diameter
P.C. = Open parcel
Corsa = P.A. – P.C.
AP = Open step
X = Bellows fold height

Type C fixing schemes

Circular, watertight, heat-sealed bellows

Bellows with the type C fastening system have two flanges

Bellows data:

Ø e. soff. = Circular bellows outer diameter
Ø i. soff. = Bellows internal diameter
Ø i.f. = Internal flange diameter
Ø int. holes = Flange hole centre-to-centre diameter
Ø e. f = Flange outer diameter
P.A. = Open parcel
P.C. = Closed parcel
Corsa = P.A. – P.C.
AP = Open step
X = Bellows fold height

Standard materials

Materials available

  • Code PEI: TEMAT 018 Polyester coated in PVC thickness 0.7
  • Code PEI: TEMAT 019 Polyester coated in PVC thickness 0.5
  • Code PEI: TEMAT 153 POLYURETHANE leaf thickness 0.5
  • Code PEI: TEMAT 153/S POLYURETHANE leaf thickness 0.7
  • Code PEI: TEMAT 156 POLYURETHANE leaf thickness 0.5

Further materials are available on request: consult our technical department.

Formulae

Formule

Circular, watertight, heat-sealed bellows

Formulae for calculating closed parcel

Download the list of materials

Questionnaires