Type 1648 John crane
Type 1648 John crane

Features mechanical seal type 1648

  • California Residents: PROPOSITION 65 WARNING
  • Qualification-tested per API 682
  • Complies with API 682 technical design requirements
  • Standard materials, per API 682
  • Fits API 682 Table 1 and 2 seal chambers
  • Computer-optimized, low-emission seal face designs

Recommended Applications type 1648

  • Process pumps
  • Other rotating equipment

About Mechanical seal type 1648

The Type 1648 is a high-performance single cartridge pusher seal designed to help prevent emissions leakage in most refinery applications. It is applied in non-hydrocarbon, non-flashing hydrocarbon and flashing hydrocarbon services. Process leakage is further contained by standard incorporation of a floating throttle bushing.

Design Features mechanical seal type 1648

  • API 682 qualification tested
  • Evolved from performance-proven Type 48 designs
  • Easy-to-install cartridge design with registered fit
  • Computer-optimized, low-emission seal faces
  • Segmented spring-loaded carbon throttle bushing for effective containment (Type 1648)
  • Distributed flush optimizes circulation of liquid at faces and prevents trapped vapor
  • Available with pumping ring when utilizing an API Flush Plan 23 (Type 1648)
  • Dual seals equipped with pumping ring for optimized flow
  • Withstands reverse pressurization (Type 3648)

Material mechanical seal type 1648

  • Face/Primary Ring: Antimony Carbon
  • Seat/Mating Ring: Reaction Bonded, Silicon Carbide
  • Retainer: 316 Stainless Steel
  • Disc: 316 Stainless Steel
  • Snap Screw: 316 Stainless Steel
  • Set Screw: 316 Stainless Steel
  • Sleeve: 316 Stainless Steel
  • Collar: 316 Stainless Steel
  • Segmented Bushing: 316 Stainless Steel
  • Gland Plate: 316 Stainless Steel
  • Auxiliary Gland: 316 Stainless Steel
  • Spring: Alloy C-276 316
  • O-Ring: Fluoroelastomer

Operating range mechanical seal type 1648

Temperature Limits

-40°F to 500°F/-40°C to 260°C

 

Pressure Limits

1000 psi(g)/69 bar(g)

 

Speed Limits

5000fpm/25m/s

Product Description type 1648

Type 1648 – Category 2, Type A, Arrangement 1 single cartridge seal. Available with either a fixed, floating or segmented bushing option and with either a single point or distributed flush  arrangement.

Type 1648 – Category 3, Type A, Arrangement 1 single cartridge seal with segmented bushing and distributed flush standard.
Provided with the appropriate documentation in accordance with API 682.