A7 series is widely used, with strong interchangeability and compact structure; the push ring is stuck by the transmission catch to prevent the spring from falling off; it has reliable performance and is widely used in petrochemical pumps.
product description：
1. Single end face
2. Unbalanced
3. Arbitrary rotation
4. Comply with EN12756 (DIN24960) standard
A7 series is widely used, with strong interchangeability and compact structure; the push ring is stuck by the transmission catch to prevent the spring from falling off; it has reliable performance and is widely used in petrochemical pumps.
Standard operating parameters：
Specifications: 14～200mm
Pressure: ≤2.5 Mpa
Temperature: -50～220℃
Linear speed: ≤20 m/s
Axial play：
d1≤25:±1.0mm
d1≥28～63 : ±1.5mm
d1≥65:±2.0mm
material combination：
Sealing face:
Graphite, Silicon Carbide, Tungsten Carbide, Alumina
Auxiliary Seal:
Nitrile rubber, fluorine rubber, ethylene propylene rubber, silicone rubber, PTFE
Metal components:
Stainless steel
torque transmission：
A74 type mainly adopts multi-spring structure, and other installation dimensions and performance are equivalent to C7 type;
A7F and A74F are threaded pump seals, which are mainly used in the conditions where the liquid in the sealed cavity needs self-circulation.
