Item Description
1.1 Seal face
1.2 Bellows
1.3 Collar
1.4 Locking ring
1.5 Spring
1.6 Drive ring
2.1 Stationary seat
2.2 Gasket

BT-AR

Features

  • Single and dual seal
  • For plain shafts
  • Elastomer bellows rotating
  • Unbalanced
  • Independent of direction of rotation
  • Available in metric and imperial sizes

Advantages

  • Shaft protection over entire seal length
  • Short axial length
  • High volume seal for use in low pressure, small diameter rotary shaft applications
  • High flexibility thanks to extended selection of materials
  • Best quality/price ratio
  • Dimensions can be customized
  • Additional seats available

Notes The BT-AR can also be used as a multiple seal in tandem or back-to-back arrangement. Installation suggestions are available upon request.

Dimensional adaptations for special conditions, such as inch shafts, different axial lengths, or specific seat dimensions are available upon request.

Operating range

Shaft diameter: d1 = 6 … 70 mm (0.24" … 2.76")
Pressure: p1* = 6 bar (87 PSI),
vacuum … 0.5 bar (7.25 PSI) up to 1 bar (14.5 PSI) with seat locking
Temperature:
t* = -20 °C … +120 °C (-4 °F … +248 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)

* Dependent on medium, size and material

Materials

Seal face:
Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Carbon graphite, full carbon (B3), Silicon carbide (Q1, Q6), Tungsten carbide (U), PTFE glass fiber reinforced (Y1)), PTFE carbon reinforced (Y2)
Seat:
Al-oxide (V, V1), Silicon carbide (Q1, Q6, Q7), Tungsten carbide (U), Cr steel (E), CrNi steel (F1), CrNiMo steel (G)
Elastomers:
NBR (P), EPDM (E), FKM (V), HNBR (X4)
Metal parts:
CrNi steel 1.4301 (F), CrNiMo steel 1.4401 (G), CrNi steel 1.4057 (F1)

Standards and approvals

  • UBA
  • W270
  • ACS
  • WRAS
  • NSF
  • DM 174/04
  • FDA
  • EC 1935/2004
  • Various material approvals (depending on type and material combinations). Please inquire!



Product variants

BT-AR4

BT-AR4

Item and description as for type BT-AR, but with shrink fitted seal face to the seal face carrier. Shaft diameter: d1 = 25 … 70 mm (0.98" … 2.76").

Similar products

AX05

  • Unbalanced
  • Independent on direction of rotation

BT-A2

  • Unbalanced
  • Single spring
  • Independent of direction of rotation
  • Stationary spring-loaded unit

BT-ARP

  • For plain shafts
  • Elastomer bellows rotating
  • Unbalanced
  • Single seal
  • Independent of direction of rotation
  • protected spring
Contact

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