Features
Repalcement of Burgmann APItex
Single and dual seals
Cartridge
Seal design according API 682 / ISO 21049
Category 1, Type A, Arrangement 1, 2 or 3
Balanced
Independent of direction of rotation
Shrink-fitted seal faces
Solid seats
Single seal with API Plan 11 and 61 (Apitex-SA)
Dual seals with API Plan 52 / 53
Operating range
Shaft diameter: d1 = 20 110 mm (0.750" 4.300"),other sizes on request
Pressure: p1 = 22 bar (319 PSI)
Temperature: t = -40 °C 260 °C (-40 °F 500 °F)(>220 °C (428 °F) please inquire)
Sliding velocity: vg = 23 m/s (75 ft/s)
Materials
Seal face: Carbon graphite antimony impregnated (A), Silicon carbide sintered pressureless (Q12)
Seat: Silicon carbide sintered pressureless (Q1)
Secondary seals: FKM (V), FFKM (K), NBR (P), EPDM (E)
Springs: Hastelloy® C-4 (M)* and C-276 (M5)
Metal parts: CrNiMo steel (G)
* EagleBurgmann standard
Advantages
Suitable for pressure reversal
Insensitive to shaft deflections and process fluctuations
Cover distortion cannot cause seat misalignment
Good heat dissipation
No external pump necessary
Pre-assembled unit, ready to install
Low space requirements
Security due to proofed design
Springs protected from the product