Mechanical seal R-21UK. Page 4
Mechanical seal R-21UK
Mechanical mechanical seal R-21 UK (UK Standart) - single, with a strong central spring, arbitrary direction of rotation, unbalanced. The elastomeric bellows has the ability to compensate for the runout of the shaft, and thanks to the special design of the drive belt, the bellows itself does not overload and does not slip.
Application: water treatment, water supply, centrifugal pumps, compressors and other rotating equipment. Pumps of such brands: Desmi, Flowserve (SIHI), etc.
Type: John Crane 21, Burgmann MG921/D1-G50 seal, Flowserve 110 seal, Roten 21A, Sealol 43 CU Short, Vulcan 11, Aesseal P04/P04T, Sterling 212A, US Seal C, Lidering LRB01.
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-21UK
| d1 | d3 | d7 | L3 | L4 |
| 10 | 20,50 | 24,60 | 25,40 | 8,74 |
| 12 | 22 ,50 | 27,79 | 25,40 | 8,74 |
| 14 | 26,50 | 30,95 | 25,40 | |
| 16 | 26,50 | 30,95 | 25,40 | 10,32 |
| 18 | 34,00 | 34,15 | 25,40 | 10,32 |
| 20 | 36,00 | 35,70 | 25,40 | 10,32 |
| 22 | 36,00 | 37,30 | 25,40 | 10,32 |
| 24 | 40,00 | 40,50 | 25,40 | 10,32 |
| 25 | 40,00 | 40,50 | 25,40 | 10,32 |
| 28 | 42,00 | 47,63 | 33,34 | 11,99 |
| 30 | 45,00 | 50,80 | 33,34 | 11,99 |
| 32 | 47,00 | 50,80 | 33,34 | 11,99 |
| 33 | 50,00 | 53,98 | 33,34 | 11,99 |
| 35 | 50,00 | 53,98 | 33,34 | 11,99 |
| 38 | 55,00 | 57,15 | 33,34 | 11,99 |
| 40 | 57,00 | 60,35 | 33,34 | 11,99 |
| 42 | 59,00 | 63,50 | 40,48 | 11,99 |
| 43 | 59,00 | 63,50 | 40,48 | 11,99 |
| 45 | 65,50 | 63,50 | 40,48 | 11,99 |
| 48 | 67,50 | 66,70 | 40,48 | 11,99 |
| 50 | 67,50 | 69,85 | 40,48 | 11,99 |
| 53 | 72,00 | 73,05 | 41,00 | 13,50 |
| 55 | 78,50 | 76,20 | 41,00 | 13,50 |
| 58 | 80,00 | 79,40 | 41,00 | 13,50 |
| 60 | 80,00 | 79,40 | 41,00 | 13,50 |
| 63 | 83,00 | 82,55 | 41,00 | 13,50 |
| 65 | 88,00 | 92,10 | 49,00 | 15,90 |
| 70 | 90,00 | 95,25 | 49,00 | 15,90 |
| 73 | 94,00 | 98,45 | 49,00 | 15,90 |
| 75 | 99,00 | 101,65 | 49,00 | 15,90 |
Mechanical seal R-21UK(Inch)
| d1 | d3 | d7 | L3 | L4 | |
| 0.375 | 9,53 | 20,50 | 24,60 | 25,40 | 8,74 |
| 0.500 | 12,70 | 22,50 | 27,79 | 25,40 | 8,74 |
| 0.625 | 15,87 | 26,50 | 30,95 | 25,40 | 10,32 |
| 0.750 | 19,05 | 34,00 | 34,15 | 25,40 | 10,32 |
| 0.875 | 22,23 | 36,00 | 37,30 | 25,40 | 10,32 |
| 1.000 | 25,40 | 40,00 | 40,50 | 25,40 | 10,32 |
| 1.125 | 28,58 | 42,00 | 47,63 | 33,34 | 11,99 |
| 1.250 | 31,75 | 47,00 | 50,80 | 33,34 | 11,99 |
| 1.375 | 34,93 | 50,00 | 53,98 | 33,34 | 11,99 |
| 1.500 | 38,10 | 55,00 | 57,15 | 33,34 | 11,99 |
| 1.625 | 41,28 | 57,00 | 60,35 | 33,34 | 11,99 |
| 1.750 | 44,45 | 61,50 | 63,50 | 40,48 | 11,99 |
| 1.875 | 47,63 | 65,50 | 66,70 | 40,48 | 11,99 |
| 2.000 | 50,80 | 67,50 | 69,85 | 40,48 | 11,99 |
| 2.125 | 53,98 | 72,00 | 73,05 | 41,00 | 13,50 |
| 2.250 | 57,15 | 78,50 | 76,20 | 41,00 | 13,50 |
| 2.375 | 60,33 | 80,00 | 79,40 | 41,00 | 13,50 |
| 2.500 | 63,50 | 83,00 | 82,55 | 41,00 | 13,50 |
| 2.625 | 66,68 | 88,00 | 92,10 | 49,00 | 15,90 |
| 2.750 | 69,85 | 90,00 | 95,25 | 49,00 | 15,90 |
| 2.875 | 73,03 | 94,00 | 98,45 | 49,00 | 15,90 |
| 3.000 | 76,20 | 99,00 | 101,65 | 49,00 | 15,90 |
Pre-order only
Vendor code: 1009840
| Shaft diameter | 7/8" |
| Outer diameter of the fixed ring, mm | 37,3 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$44
$-3
$47 
Pre-order only
Vendor code: 1009841
| Shaft diameter | 1" |
| Outer diameter of the fixed ring, mm | 40,5 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$51
$-3
$54 
Pre-order only
Vendor code: 1009842
| Shaft diameter | 1.1/8" |
| Outer diameter of the fixed ring, mm | 47,63 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$57
$-3
$60 
Pre-order only
Vendor code: 1009843
| Shaft diameter | 1.1/4" |
| Outer diameter of the fixed ring, mm | 50,8 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$63
$-3
$66 
Pre-order only
Vendor code: 1009844
| Shaft diameter | 1.3/8" |
| Outer diameter of the fixed ring, mm | 53,98 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$70
$-3
$73 
Pre-order only
Vendor code: 1009845
| Shaft diameter | 1.1/2" |
| Outer diameter of the fixed ring, mm | 57,15 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$76
$-4
$80 
Pre-order only
Vendor code: 1009846
| Shaft diameter | 1.5/8" |
| Outer diameter of the fixed ring, mm | 60,35 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$131
$-7
$138 
Pre-order only
Vendor code: 1009847
| Shaft diameter | 1.3/4" |
| Outer diameter of the fixed ring, mm | 95,25 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$141
$-8
$149 
Pre-order only
Vendor code: 1009848
| Shaft diameter | 1.7/8" |
| Outer diameter of the fixed ring, mm | 66,7 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$152
$-8
$160 
Pre-order only
Vendor code: 1009849
| Shaft diameter | 2" |
| Outer diameter of the fixed ring, mm | 69,85 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$161
$-9
$170 
Pre-order only
Vendor code: 1009850
| Shaft diameter | 2.1/8" |
| Outer diameter of the fixed ring, mm | 73,05 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$171
$-9
$180 
Pre-order only
Vendor code: 1009851
| Shaft diameter | 2.1/4" |
| Outer diameter of the fixed ring, mm | 76,2 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$182
$-9
$191 
Pre-order only
Vendor code: 1009852
| Shaft diameter | 2.3/8" |
| Outer diameter of the fixed ring, mm | 79,4 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$192
$-10
$202 
Pre-order only
Vendor code: 1009853
| Shaft diameter | 2.1/2" |
| Outer diameter of the fixed ring, mm | 82,55 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$201
$-11
$212 
Pre-order only
Vendor code: 1009854
| Shaft diameter | 2.5/8" |
| Outer diameter of the fixed ring, mm | 92,1 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$212
$-11
$223 
Pre-order only
Vendor code: 1009855
| Shaft diameter | 2.3/4" |
| Outer diameter of the fixed ring, mm | 95,25 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$222
$-12
$234 
Pre-order only
Vendor code: 1009856
| Shaft diameter | 2.7/8" |
| Outer diameter of the fixed ring, mm | 98,45 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$231
$-13
$244 
Pre-order only
Vendor code: 1009857
| Shaft diameter | 3" |
| Outer diameter of the fixed ring, mm | 101,65 |
| Type of conta-ring | N |
| Producer | BTS Engineering |
| Stationary and rotating face | CER/CAR |
$242
$-13
$255 
