Mechanical seal R-21. Page 3
Mechanical seal R-21
Mechanical seal R-21 (US Standart) - single, unbalanced, with a rubber bellows and an arbitrary direction of rotation.
Application: clean water, waste water, superheated water, oils and other moderately aggressive liquids. Pumps of such brands: Koshin, Scot Motorpump, Desmi, Baltimore Aircoil, Inoxpa, Summit, Goulds Pumps, Lowara, Rovatti, Tonkaflo, etc.
Type: John Crane 21, Burgmann MG921/D1-G55 seal, Flowserve 110 seal, Roten 21A, Sealol 43 CU Short, Vulcan 11, Aesseal P04/P04T, Sterling 212A, US Seal C.
Temperature: -20°~145°
Pressure: ≤1.5 MPa
Speed: ≤13 m/sec
Materials:
- Rotary ring: Carbon/SIC/TC;
- Stationary ring: Ceramic/SIC/TC;
- Bellows: NBR/EPDM/VITON;
- Spring: SS304/SS316;
- Metal parts: SS304/SS316.
Mechanical seal R-21
| d1 | d3 | d7 | L3 | L4 | |
| 10 | 10 | 20,5 | 22,23 | 20,62 | 7,2 |
| 12 | 12 | 22,5 | 25,40 | 20,62 | 7,9 |
| 14 | 14 | 26,5 | 31,75 | 22,22 | 10,3 |
| 16 | 16 | 26,5 | 31,75 | 22,22 | 10,3 |
| 18 | 18 | 34,0 | 34,93 | 22,22 | 10,3 |
| 20 | 20 | 36,0 | 38,10 | 23,80 | 10,3 |
| 22 | 22 | 36,0 | 38,10 | 23,80 | 10,3 |
| 24 | 24 | 40,0 | 41,28 | 25,40 | 11,1 |
| 25 | 25 | 40,0 | 41,28 | 25,40 | 11,1 |
| 28 | 28 | 42,0 | 44,45 | 26,97 | 11,1 |
| 30 | 30 | 45,0 | 47,63 | 26,97 | 11,1 |
| 32 | 32 | 47,0 | 47,63 | 26,97 | 11,1 |
| 33 | 33 | 50,0 | 50,80 | 28,58 | 11,1 |
| 35 | 35 | 50,0 | 50,80 | 28,58 | 11,1 |
| 38 | 38 | 55,0 | 53,98 | 28,58 | 11,1 |
| 40 | 40 | 57,0 | 60,33 | 34,93 | 12,7 |
| 43 | 43 | 59,0 | 63,50 | 34,93 | 12,7 |
| 45 | 45 | 65,5 | 66,68 | 38,10 | 12,7 |
| 48 | 48 | 67,5 | 69,85 | 38,10 | 12,7 |
| 50 | 50 | 67,5 | 69,85 | 38,10 | 12,7 |
| 53 | 53 | 72,0 | 76,20 | 42,85 | 14,3 |
| 55 | 55 | 78,5 | 79,38 | 42,85 | 14,3 |
| 58 | 58 | 80,0 | 82,55 | 46,02 | 14,3 |
| 60 | 60 | 80,0 | 82,55 | 46,02 | 14,3 |
| 63 | 63 | 83,0 | 85,73 | 46,02 | 14,3 |
| 65 | 65 | 88,0 | 85,73 | 49,20 | 15,9 |
| 68 | 68 | 90,0 | 88,90 | 49,20 | 15,9 |
| 70 | 70 | 90,0 | 88,90 | 49,20 | 15,9 |
| 73 | 73 | 94,0 | 95,25 | 52,37 | 15,9 |
| 75 | 75 | 99,0 | 98,43 | 52,37 | 15,9 |
Mechanical seal R-21 (Inch)
| d1 | d3 | d7 | L3 | L4 | |
| 0.375 | 9,53 | 20,50 | 22,23 | 20,62 | 7,9 |
| 0.437 | 11,10 | 22,50 | 25,40 | 20,62 | 7,9 |
| 0.500 | 12,70 | 22,50 | 25,40 | 20,62 | 7,9 |
| 0.625 | 15,87 | 26,50 | 31,75 | 22,22 | 10,3 |
| 0.750 | 19,05 | 34,00 | 34,93 | 22,22 | 10,3 |
| 0.875 | 22,23 | 36,00 | 38,10 | 23,80 | 10,3 |
| 1.000 | 25,40 | 40,00 | 41,28 | 25,40 | 11,1 |
| 1.125 | 28,58 | 42,00 | 44,45 | 26,97 | 11,1 |
| 1.250 | 31,75 | 47,00 | 47,63 | 26,97 | 11,1 |
| 1.375 | 34,93 | 50,00 | 50,80 | 28,58 | 11,1 |
| 1.437 | 36,50 | 55,00 | 53,98 | 28,58 | 11,1 |
| 1.500 | 38,10 | 55,00 | 53,98 | 28,58 | 11,1 |
| 1.625 | 41,28 | 57,00 | 60,33 | 34,93 | 12,7 |
| 1.750 | 44,45 | 61,50 | 63,50 | 34,93 | 12,7 |
| 1.875 | 47,63 | 65,50 | 66,68 | 38,10 | 12,7 |
| 2.000 | 50,80 | 67,50 | 69,85 | 38,10 | 12,7 |
| 2.125 | 53,98 | 72,00 | 76,20 | 42,85 | 14,3 |
| 2.250 | 57,15 | 78,50 | 79,38 | 42,85 | 14,3 |
| 2.375 | 60,33 | 80,00 | 82,55 | 46,02 | 14,3 |
| 2.437 | 61,90 | 80,00 | 82,55 | 46,02 | 14,3 |
| 2.500 | 63,50 | 83,00 | 85,73 | 46,02 | 14,3 |
| 2.625 | 66,68 | 88,00 | 85,73 | 49,20 | 15,9 |
| 2.750 | 69,85 | 90,00 | 88,90 | 49,20 | 15,9 |
| 2.875 | 73,03 | 94,00 | 95,25 | 52,37 | 15,9 |
| 3.000 | 76,20 | 99,00 | 98,43 | 52,37 | 15,9 |
Pre-order only
Vendor code: 1052672
| Shaft diameter | 2.1/4" |
| Outer diameter of the fixed ring, mm | 79,38 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$169
$-8
$177 
Pre-order only
Vendor code: 1052673
| Shaft diameter | 25 |
| Outer diameter of the fixed ring, mm | 41,28 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$39
$-2
$41 
Pre-order only
Vendor code: 1052674
| Shaft diameter | 25 |
| Outer diameter of the fixed ring, mm | 41,28 |
| Producer | BTS Engineering |
| Stationary and rotating face | SIC/SIC |
| Material of metal part | AISI 304 stainless steel |
$46
$-3
$49 
Pre-order only
Vendor code: 1052675
| Shaft diameter | 35 |
| Outer diameter of the fixed ring, mm | 50,8 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$54
$-3
$57 
Pre-order only
Vendor code: 1052676
| Shaft diameter | 38 |
| Outer diameter of the fixed ring, mm | 53,98 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$58
$-3
$61 
Pre-order only
Vendor code: 1052677
| Shaft diameter | 38 |
| Outer diameter of the fixed ring, mm | 53,98 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$70
$-4
$74 
Pre-order only
Vendor code: 1052678
| Shaft diameter | 40 |
| Outer diameter of the fixed ring, mm | 60,33 |
| Producer | BTS Engineering |
| Stationary and rotating face | SIC/SIC |
| Material of metal part | AISI 304 stainless steel |
$117
$-6
$123 
Pre-order only
Vendor code: 1052679
| Shaft diameter | 50 |
| Outer diameter of the fixed ring, mm | 69,85 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$123
$-7
$130 
Pre-order only
Vendor code: 1052680
| Shaft diameter | 50 |
| Outer diameter of the fixed ring, mm | 69,85 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$148
$-7
$155 
Pre-order only
Vendor code: 1052681
| Shaft diameter | 50 |
| Outer diameter of the fixed ring, mm | 69,85 |
| Producer | BTS Engineering |
| Stationary and rotating face | SIC/SIC |
| Material of metal part | AISI 304 stainless steel |
$148
$-7
$155 
Pre-order only
Vendor code: 1009709
| Shaft diameter | 10 |
| Outer diameter of the fixed ring, mm | 22,23 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$16
Pre-order only
Vendor code: 1009710
| Shaft diameter | 12 |
| Outer diameter of the fixed ring, mm | 25,4 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$19
$-1
$20 
Pre-order only
Vendor code: 1009711
| Shaft diameter | 14 |
| Outer diameter of the fixed ring, mm | 31,75 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$21
$-1
$22 
Pre-order only
Vendor code: 1009712
| Shaft diameter | 16 |
| Outer diameter of the fixed ring, mm | 31,75 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$25
$-1
$26 
Pre-order only
Vendor code: 1009713
| Shaft diameter | 18 |
| Outer diameter of the fixed ring, mm | 34,93 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$28
$-2
$30 
Pre-order only
Vendor code: 1009714
| Shaft diameter | 20 |
| Outer diameter of the fixed ring, mm | 38,1 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$31
$-1
$32 
Pre-order only
Vendor code: 1009715
| Shaft diameter | 22 |
| Outer diameter of the fixed ring, mm | 38,1 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$34
$-2
$36 
Pre-order only
Vendor code: 1009716
| Shaft diameter | 24 |
| Outer diameter of the fixed ring, mm | 41,28 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$38
$-2
$40 
Pre-order only
Vendor code: 1009717
| Shaft diameter | 28 |
| Outer diameter of the fixed ring, mm | 44,45 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$43
$-3
$46 
Pre-order only
Vendor code: 1009718
| Shaft diameter | 30 |
| Outer diameter of the fixed ring, mm | 47,63 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$47
$-2
$49 
Pre-order only
Vendor code: 1009719
| Shaft diameter | 32 |
| Outer diameter of the fixed ring, mm | 47,63 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$49
$-3
$52 
Pre-order only
Vendor code: 1009720
| Shaft diameter | 33 |
| Outer diameter of the fixed ring, mm | 50,8 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$51
$-3
$54 
Pre-order only
Vendor code: 1009721
| Shaft diameter | 40 |
| Outer diameter of the fixed ring, mm | 60,33 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$98
$-5
$103 
Pre-order only
Vendor code: 1009722
| Shaft diameter | 43 |
| Outer diameter of the fixed ring, mm | 63,5 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$106
$-5
$111 
Pre-order only
Vendor code: 1009723
| Shaft diameter | 45 |
| Outer diameter of the fixed ring, mm | 66,68 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$110
$-6
$116 
Pre-order only
Vendor code: 1009724
| Shaft diameter | 48 |
| Outer diameter of the fixed ring, mm | 69,85 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$117
$-7
$124 
Pre-order only
Vendor code: 1009725
| Shaft diameter | 53 |
| Outer diameter of the fixed ring, mm | 76,2 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$130
$-7
$137 
Pre-order only
Vendor code: 1009726
| Shaft diameter | 55 |
| Outer diameter of the fixed ring, mm | 79,38 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$135
$-7
$142 
Pre-order only
Vendor code: 1009727
| Shaft diameter | 58 |
| Outer diameter of the fixed ring, mm | 82,55 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$142
$-7
$149 
Pre-order only
Vendor code: 1009728
| Shaft diameter | 60 |
| Outer diameter of the fixed ring, mm | 82,55 |
| Producer | BTS Engineering |
| Stationary and rotating face | CAR/SIC |
| Material of metal part | AISI 304 stainless steel |
$147
$-8
$155 
