BT-FH.NB

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BT-FH.NB

BT-FH.NB
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Item Description
1.1 Seal face
2.1 Stationary seat
1.2 Collar
1.3,1.4 O-RING
1.5 Spring
1.2 Collar
2.2 O-Ring

BT-FH.NB

Features

  • Single seal
  • For stepped shafts
  • Balanced
  • Conical spring rotating
  • Dependent on direction of rotation
  • Torque transmission via conical spring
  • Version with shorter length available (KB)

Advantages

  • Universal application opportunities
  • Reliable design
  • Economical balanced seal
  • High flexibility due to extended selection of materials
  • No damage of the shaft by set screws

Operating range

Shaft diameter:
d1 = 16 … 70 mm (0.63" … 2.76")
Pressure: p1* = 25 bar (363 PSI)
Temperature:
t* = -35 °C … +180 °C (-31 °F … +356 °F)
Sliding velocity: vg = 15 m/s (50 ft/s)

* Dependent on medium, size and material

Materials

Seal face:Silicon carbide (Q1, Q6, Q7)
Seat:Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Carbon graphite, full carbon (B3), Silicon carbide (Q1, Q6, Q7)
Elastomers: NBR (P), EPDM (E), FKM (V), FFKM (K)
Metal parts: CrNiMo steel (G)

Standards and approvals

  • EN 12756
  • Various material approvals e.g. WRAS, UBA, ACS, NSF, FDA available (depending on type and material combinations). Please inquire!

Notes

Alternative seat ring can be supplied with short tail or long tail with slot for pin (to prevent seat rotation).


Product variants

BT-FH.KB

BT-FH.KB

Items and designations same as for BT-FH.NB, but with installation length l1K according to EN 12756 (Short, Balanced).

Item description

1.1 Seal face
2.1 Stationary seat
1.2 Collar
1.3, 1.4 O-Ring
1.5 Spring
1.2 collar
2.2 O-Ring

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