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SS-BT-A2: Burgmann BT-A2, Johnc rane Type 6A mechanial seal

Description:
SS-BT-A2: Replacement of Burgmann BT-A2, John crane Type 6A, AES B03/B03U, Flowserve 170, Roten 68, Sterling 268/269, Vulcan 70/75

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SS-BT-A2:Burgmann BT-A2, John Crane TYPE 6A, VULCAN TYPE 75, Roten,Pac-Seal TYPE 68
Structure Description:
Equivalent to Burgmann BT-A2, John Crane TYPE 6A, VULCAN TYPE 75, Roten,Pac-Seal TYPE 68, Trisun TSF
UNBALANCED
SINGLE SPRING
BI-DIRECTIONAL
ELASTOMER BELLOWS
ONE PIECE CONSTRUCTION
Operating range:
Shaft diameter: d1 = 1/2", 5/8", 3/4"
Pressure: p = 4 bar (58 PSI)
Temperature: t = -20 °C ... +90 °C (-4 °F … +194 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Operating limits depend on p·vg factor
Materials: 
Seal face: Carbon graphite resin impregnated (B, B3)
Seat: Aluminium oxide (V1)
Elastomer: NBR (P)
Metal parts: CrNi steel (F), CrNiMo steel (G)
Standard combination: BV1PFF, B3V1PGG
Features：
Equivalent to Burgmann BT-A2
Unbalanced
Single spring
Independent of direction of rotation
Elastomer bellows
Advantages:
Stationary mechanical seal in inch dimensions.Worldwide spread, this type of mechanical seal has reached an unsurpassed quality level. The SSBT-A2 features all carbon or high quality resin impregnated carbon, aluminium oxide 96 %. Static air pressure test on 100 % production. Excellent solution for swimming pool pumps. The SSBT-A2 is suitable for circulation massage pumps for whirlpools and clean water pumps.

SS-BT-A2 Dimensions(inches)
d1 d1(mm) d3 toll d4 d7 L3 toll L4 L5 L7
1/2'' 12.70  28.55  +0.02 35 25.40  5.2 +0.5 8.0  6.0  10
5/8'' 15.88  36.45  +0.02 41 31.75  6.8 +0.5 10.3  8.5  10
3/4'' 19.05  40.00  +0.02 44 34.95  6.5 +0.5 10.3  8.0  11

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