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Grundfos Multi-Stage Pump Slow Wire Mechanical Seal for SPK2/4/8/16 CRK-12mm
Product Overview
Mechanical seal designed for GF pumps with standard sizes of 12mm and 16mm. Standard material configuration features Tungsten carbide/Tungsten carbide/FKM elastomer.
Application Models
For Shaft Size 12mm Pumps: CRK2, CRK4 (CRK2/4AUUV) For Shaft Size 16mm Pumps: CRK8, CRK16 (CRK8/16AUUV, CRK8/16, CRN8/16)
Technical Parameters
Parameter
Specification
Temperature
-30℃ to +180℃ (dependent on elastomer)
Pressure
≤ 2 MPa
Speed
≤ 12 m/s
Medium
Chemical raw materials
Material Composition
Component
Material
Rotary Ring
SIC CAR CE TC
Stationary Ring
SIC CAR CE TC
Spring
SUS304/SUS316
Stationary Seat
SUS304/SUS316
Secondary Seal
FKM/EPDM
Rotary Ring Holder
SUS304/SUS316
Installation Preparation
Shaft Outside Diameter tolerance: ±0.05mm
Shaft run out: < 0.1mm
Shaft end float: < 0.13mm
No sharp edges on the shaft over the O-ring
Note: During installation, avoid scratching or damaging the O-ring. If any damage occurs, contact us for replacement.
Installation Instructions
The complete cartridge seal set is cleaned and passes leakage examination before sale. To avoid damage, do not disassemble and clean parts again before installation.
The fitting allowance between seal and shaft is dl h6 0.8. Provide a leading edge at the shaft end.
The shaft outside diameter at screw position should be 0.1-0.2mm smaller to resist screw over-tightening.
Lubricate the shaft with oil before installation.
Place the cartridge seal into the pump chamber, then:
Tighten four screw bolts of flanges, ensuring medium leading in hole "G" is at the top position
Tighten four set screws to position the shaft sleeve on the shaft
Remove four gauge plates (keep for future installation and disassembly)
Connect the medium lead-in pipe with hole "G" to flush away friction heat and flush the seal chamber during pump operation
Important: After complete installation, turn the shaft by hand to check rotation. If the shaft does not rotate smoothly, the seal has been improperly installed.
We sincerely cooperate with clients to supply high quality products and service. We believe establishing long-term cooperative relationships is key to success.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Year Established:
2002
Total Annual:
3000000-5000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Guangzhou Yuemi Mechanical Seals Co., Ltd
Guangzhou Yuemi Mechanical Seals Co., Ltd. is a professional enterprise engaged in the design, development, manufacturing, and sales of various mechanical seals. We have complete production and testing equipment, and a high-quality workforce. It has f...
Guangzhou Yuemi Mechanical Seals Co., Ltd
Guangzhou Yuemi Mechanical Seals Co., Ltd. is a professional enterprise engaged in the design, development, manufacturing, and sales of various mechanical seals. We have complete production and testing equipment, and a high-quality workforce. It has f...
