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With full enclosed elastomer bellows design
Insensitive to shaft play and run out
Bellows should not twist due to bi-directional and robust drive
Single seal and single spring
Conform with DIN24960 standard
Petroleum chemical industry
Industrial pumps
Industrial pumps
Process pumps
Other Rotating Equipment
Shaft diameter: d1=14...100 mm
Pressure: p=0...2.8Mpa（406psi）
Temperature: t = -40 °C ...200 °C(-40°F to 392°F)
Sliding velocity: Vg≤13m/s（42.6ft/m）
Notes: The range of preesure,temperature and sliding velocity is depend on seals combination materials
QT 301
Operating Limits：
Pressure: ≤0.6MPa
Speed: ≤10m/s
Temperature: -30℃～+200℃
Rotary Ring(Plastic Carbon/Carbon/Sic/TC)
Stationary Ring(Ceramic/Sic/Tc)
Secondary Seal(nbr/Epdm/VITON)
Spring & Other Parts(Sus304/Sus316)
Rotary Face
Hot-Pressing Carbon Ac
Stationary Seat
Tungsten carbide W1
Auxiliary Seal
Ethylene-Propylene-Diene (EPDM) E
Spring
Stainless Steel (SUS304) F
Metal Parts
| Model | d1 (mm) | d3 | d6 | d7 | l1 | l3 |
| 301-6 | 6 | 18 | 8 | 22 | 14 | 4 |
| 301-8S | 8 | 18 | 10 | 22 | 15 | 4 |
| 301-8M | 8 | 20 | 10 | 22/26 | 15/16.5 | 4.0/5.5 |
| 301-8L | 8 | 24 | 10 | 26 | 16.5 | 5.5 |
| 301-10 | 10 | 24 | 12 | 26 | 21 | 8 |
| 301-11 | 11 | 24 | 13 | 26 | 21 | 8 |
| 301-12 | 12 | 24 | 14 | 25/26 | 21 | 8 |
| 301-13 | 13 | 24 | 15 | 26 | 18.5/21 | 5.5/8.0 |
| 301-13L | 13 | 28 | 16 | 28 | 21 | 8 |
| 301-13H | 13 | 32 | 16 | 29.5 | 30.5 | 8 |
| 301-14 | 14 | 28 | 16 | 28/28.5 | 21 | 8 |
| 301-14L | 14 | 32 | 16 | 29.5 | 21 | 8 |
| 301-15S | 15 | 28 | 16 | 28.5/30 | 21 | 8 |
| 301-16S | 16 | 28 | 16 | 29.5/30 | 21 | 8 |
| 301-16M | 16 | 32 | 18 | 29.5 | 21 | 8 |
| 301-16L | 16 | 39 | 18 | 38 | 21 | 8 |
| 301-16H | 16 | 32 | 16 | 30 | 29 | 10 |
| 301-17 | 17 | 39 | 19 | 42 | 21 | 8 |
| 301-18 | 18 | 39 | 20 | 42 | 21 | 8 |
| Model | d1 (mm) | d3 | d6 | d7 | l1 | l3 |
| 301-19 | 19 | 39 | 21 | 42 | 21 | 8 |
| 301-20 | 20 | 39 | 22 | 42 | 21 | 8 |
| 301-20L | 20 | 42 | 24 | 45 | 23 | 10 |
| 301-22S | 22 | 36 | 24 | 45 | 26.5 | 10 |
| 301-22L | 22 | 42 | 24 | 45 | 23 | 10 |
| 301-23 | 23 | 47 | 25 | 50 | 23.5 | 10 |
| 301-24 | 24 | 47 | 26 | 50 | 23.5 | 10 |
| 301-25 | 25 | 42 | 27 | 50 | 23.5 | 10 |
| 301-25L | 25 | 47 | 27 | 50 | 23.5 | 10 |
| 301-26 | 26 | 47 | 29 | 50 | 23.5 | 10 |
| 301-27 | 27 | 47 | 30 | 50 | 23.5 | 10 |
| 301-28 | 28 | 54 | 31 | 57 | 25 | 10 |
| 301-30 | 30 | 54 | 33 | 57 | 25 | 10 |
| 301-32 | 32 | 54 | 35 | 57 | 25 | 10 |
| 301-35 | 35 | 60 | 38 | 63 | 26 | 10 |
| 301-38 | 38 | 65 | 41 | 68 | 30 | 12 |
| 301-40 | 40 | 65 | 43 | 68 | 30 | 12 |
| 301-45 | 45 | 70 | 48 | 73 | 32 | 12 |
| 301-50 | 50 | 85 | 52 | 88 | 38 | 15 |
| 301-55 | 55 | 85 | 58 | 88 | 38 | 15 |
| 301-60 | 60 | 105 | 63 | 110 | 45 | 15 |
| 301-65 | 65 | 105 | \ | 110 | 47 | 15 |
| 301-70 | 70 | 105 | \ | 110 | 47 | 15 |
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