Repalce John Crane M75728 Type 8B2 2.125 In Mechanical Pump Seal D574518	
Armstrong Series 4300 Ab2 Mechanical Seal Gossett Pump Seal
ARMSTRONG MODELS 4300, 4302 & 4312 MECHANICAL SEAL
Material: 
ARMSTRONG MODELS 4300, 4302 & 4312 MECHANICAL SEAL
ARMSTRONG PUMP REBUILD KIT 975002-304 (1.125″)
FOR MODELS 4300, 4302 & 4312 OUTSIDE BALANCED SEAL
FRAME SIZES 143 TC–256 TC PUMP GROUP 1–4
MATERIALS: CARBON FACE/SILICON CARBIDE STATIONARY/VITON ELASTOMER  SEAT with TEFLON GASKETS
KIT INCLUDES: BJ-MSS40-01032141AA-0258-ARM-975002-304
ARMSTRONG PUMP REBUILD KIT 975002-334 (1.625″)
FOR MODELS 4300, 4302 & 4312 OUTSIDE BALANCED SEAL
FRAME SIZE 284 TCS – 445 TCS PUMP GROUP 5 – 20
MATERIALS: CARBON FACE/SILICON CARBIDE STATIONARY/VITON ELASTOMER  SEAT with TEFLON GASKETS
KIT INCLUDES: BJ-MSS40-01032141AA-4128-ARM-975002-334
ARMSTRONG PUMP REBUILD KIT 975002-374 (2.125″)
FOR MODELS 4300, 4302 & 4312 OUTSIDE BALANCED SEAL
FRAME SIZES 324 TC – 449 TC PUMP GROUPS 21-24, 284 TC/TCS – 445 TCS PUMP GROUPS 25-33
MATERIALS: CARBON FACE/SILICON CARBIDE STATIONARY/VITON ELASTOMER  SEAT with TEFLON GASKETS
KIT INCLUDES: BJ-MSS40-01032141AA-5398-ARM-975002-374
ARMSTRONG PUMP REBUILD KIT 975002-394 (2.625″)
FOR MODELS 4300, 4302 & 4312 OUTSIDE BALANCED SEAL
FRAME SIZES 404 TCZ – 449 TCZ PUMP GROUPS 34-51
MATERIALS: CARBON FACE/SILICON CARBIDE STATIONARY/VITON ELASTOMER  SEAT with TEFLON GASKETS
KIT INCLUDES: BJ-MSS40-01032141AA-0666-ARM-975002-394
OEM PART # FOR REFERENCE PURPOSES ONLY:


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| Seal Size d | D1 | D2 | L1 | L2 | L3 | 
| 1.125 | 47.6 | 59.4 | 25.6 | 15.9 | 25.3 | 
| 1.625 | 62.0 | 71.8 | 29.5 | 15.9 | 25.3 | 
| 2.125 | 79.4 | 84.6 | 29.5 | 15.9 | 25.3 | 
| 2.625 | 88.9 | 111.0 | 41.3 | 15.9 | 25.3 | 
Our seals for Armstrong pumps, Fybroc pumps(CECO, MET-PRO corp.), Aurora pumps, Bell & Gossett, Pentair pumps..
The replacement seals used for Armstrong 
pump series 4300 (OE NO. 975002) and Fybroc pumps. 
Seals for Armstrong pumps: 
VG-975002304----1 1/8"--------975002-304
VG-975002334----1 5/8"--------975002-334
VG-975002374----2 1/8"--------975002-374
VG-975002394----2 5/8"--------975002-394
Our mechanical seal model 8B1 can Replace AESSEAL M02S and CRANE 
8B1,
 Armstrong Pumps 975002-334 MECHANICAL SEAL
 The normal material 
combination include resin carbon/ceramic/NBR/ss304,resin 
carbon/tc/nbr/ss304,sic/sic/NBR/ss304 ,tc/tc/NBR/ss304 and so on. we 
also can
 make changes as customers'requirement or totally design a new 
type of mechanical
 seal to meet clients'needs.
type 8B2 Mechanical seal-multiple spring which are availble in a wide variety of elastomers
 for handing practically every industril fluid.All components are held togther by a snap
 ring in a unized construction design and can be repaired easily on-site.
High Quality Multiple Spring O-ring Mechanical Seals
Advantages: 
We offer multi spring unbalanced sealings which are used for general-purpose
petrochemicals,mining, chemical plants, water pumps, pharmaceutical factories,
 refrigeration, power stations, and shipbuilding.
For efficiency of unbalanced seal we use raw materials such as carbon, ceramic, 
TC, PTFE and so on.
The shaft fretting in the spring unbalanced seal is minimized to lower the spring
 loads provided through wedge or O rings.
Spring unbalanced seals or spring mechanical seal can be easily assembled from
 dismantled form through circlip.
It can be changed to balance version by simply merely by changing the carbon
 face and can be provided with single, double or tandem arrangement with external
 seal support systems & devices.
8B2  mechanical seals are available in a wide variety of elastomers for 
handling 
practically every industrial fluid. All components are held 
together by a snap ring
 in a unitized construction design. It is 
suitable for general industrial applications
 including refining, 
chemical processing, food and beverage, petrochemical 
processing, 
pharmaceutical, wastewater and power generation. 
