HHC40/350, HHC50/350, HHC65/350, HHC80/400, HHC100/300, HHC125/405 Mechanical Seals

HHC40/350, HHC50/350, HHC65/350, HHC80/400, HHC100/300, HHC125/405 Mechanical Seals

Mechanical seals are categorized into single-end face cartridge-type and double-end face cartridge-type.

Single-ended modular: Only 1 pair of sealed mating surfaces, Pre-assembled by the sealing manufacturer at the factory, requiring no customer adjustments—simply install as is. Easy to set up and straightforward to use. Cooling water pressure is controlled at 0.05-0.1MPa Between

External Single-End Seal Image

Dual-end face modular: Consisting of 2 pairs of sealed mating surfaces, Pre-assembled by the sealing manufacturer at the factory, requiring no customer adjustments—simply install as is. Easy to set up and straightforward to use. Cooling water pressure is controlled at 0.05-0.1MPa Between

External Double-End Face Seal Image          

Double mechanical seals typically refer to externally mounted double seals, which are a derivative of the single-end external design (by replacing the water-side skeleton oil seal in the single seal with a tandem set of mechanical seals), aiming to extend service life.

Structural features:

Single-end (double-end) cartridge-type mechanical seal. Easy to install and simple to use. Balanced design with optional rotation direction.

Internal working length is short. The stationary ring features multi-spring external compensation that does not come into contact with the medium.

Applicable medium:

Medium containing high levels of impurities such as gypsum and lime slurry.

Work parameters:

Fixed substance content: ≤30%

Warm Temperature: ≤280°C

Press Force: ≤2.5 MPa

Axis Diameter: ≤200mm

Material parameters:
Main material: 316L or 2205, 2507, 1.4529
Sealing ring material: SSiC or SiC
Rubber materials: Fluororubber or perfluoroether rubber

Main applications:

This type of mechanical seal is primarily used in flue gas desulfurization systems for coal-fired power plants, and is suitable for absorption tower slurry circulation pumps, gypsum slurry pumps, limestone slurry pumps, and gypsum discharge pumps.

Common pump numbers are as follows:

HHC25- 250 HHC25 -350   HHC32-200    HHC32-250 

HHC32- 250 HHC32 -350    HHC50- 210 HHC80 -210 

HHC32-200   HHC40-250    HHC40- 250 HHC40 -350

HHC40- 400 HHC40 -450    HHC50- 350NI HHC50-350N2 

HHC50- 400 HHC50 -460    HHC65- 310 HHC65 -315 

HHC65-400   HHC65-350    HHC80- 400 HHC80 -450

HHC100- 300 HHC100 -320   HHC100-350  HHC100-420 

HHC150- 300 HHC150 -350   HHC200- 300 HHC100 -500 

HHC150-400   HHC200-410   HHC250- 430 HHC200 -410

HHC300- 500 HHC300 -530   HHC300-400   HHC300-635 

HHC300- 630 HHC350 -500   HHC350- 560 HHC400 -500 

HHC350-680   HHC400-560   HHC400-500   HHC350-680

HTC300- 500 HTC300 -530   HTC300-400   HTC300-635 

HTC300- 630 HTC350 -500    HTC350-450 HTC400-540

HTC350-560   HTC400-500   HTC350- 680 HTC400 -560

HTC450- 550 HTC450 -750   HTC450-635   HTC500-630 

HTC550- 700 HTC550 -710   HTC550- 750 HTC600 -800 

HTC600-825   HTC600-800   HTC700- 898 HTC700 -900

HTC800- 1000 HTC900 -1150  HTC900- 1150 HTC1000 -1300

HTC1000- 1200 HTC1000 -1250

Sealed model:

HTM-30S251Z HTM-30S351X HTM-30S220Z HTM-30S220Q

HTM-30D251ZZ HTM-30D351X

HTM-40S251Z HTM-40S351X HTM-40S220Z HTM-40S220Q

HTM-40D251ZZ HTM-40D351XX

HTM-55S251Z HTM-55S351X HTM-55S220Z HTM-55S220Q

HTM-55D251ZZ HTM-55D351XX

HTM-60S251Z HTM-60S351X HTM-60S220Z HTM-60S220Q

HTM-60D251ZZ HTM-60D351XX

HTM-80S251Z HTM-80S351X HTM-80S220Z HTM-80S220Q

HTM-80D251ZZ HTM-80D351XX

LB-LK7-120S LB-LK7-120D LB-LK6-115S LB-LK6-115D

HTM-30S HTM-40S HTM-55S HTM-60S HTM-80S

HTM-30D HTM-40D HTM-55D HTM-60D HTM-80D

HR3-125 HR3-142 HR3-158 HR3-175 HR3-198

HR325/230 HR325/210 HR325/190 HR325/170

HRM-125D3 HRM-142D3 HRM-158D3 HRM-175D3 HRM-198D3

HRM-125S3 HRM-142S3 HRM-158S3 HRM-175S3 HRM-198S3

HMR3C-125 HMR3C-142 HMR3C-158 HMR3C-175 HMR3C-198

Installation Use Requirements :

1. The radial runout of the equipment shaft should not exceed 0.04 mm, with axial runout not exceeding 0.1 mm;
2. The sealing cavity areas of the equipment should be kept clean during installation, and sealing components must be thoroughly cleaned. Ensure that the sealing end faces remain intact to prevent contaminants and dust from entering the sealing area.
3. During installation, avoid any impact or hammering to prevent damaging the mechanical seal through friction or breakage, which could lead to sealing failure.
4. During installation, apply a layer of clean machine oil to the surfaces that will come into contact with the seal, ensuring smooth installation.
5. When installing the stationary ring gland, tighten the screws evenly to ensure the stationary ring face is perpendicular to the shaft centerline.
6. After installation, gently push the moving ring by hand to ensure it moves freely along the shaft while maintaining some elasticity.
7. After installation, manually turn the shaft—there should be no sensation of unevenness or heaviness.
8. Before operating, the equipment must be fully charged with the medium to prevent dry friction, which could lead to seal failure.