• Self-Aligning: The flexible rubber bellow compensates for shaft end-play and misalignment common in older, worn pumps.
• Simple Installation: One-piece rotary unit slides onto the shaft; no set screws to tighten or drive pins to align.
Key Features
• Type 301 Style: An aftermarket replacement for the specific "Type 301" style seal used in legacy APV water and simple transfer pumps.
• Rubber Bellows Design: Features a robust rubber bellow that drives the rotary face, similar to a Type 21 but dimensioned for APV housings.
• Economical Repair: A cost-effective solution for extending the life of older APV pumps in water service.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Ceramic/Sic/TC |
Pressure | ≤0.5MPa | Rotary Ring | Carbon/Sic/TC |
Temperature | -20℃ to 100℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤10m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| D1 (inch) | Size Code | D3 | D7 | L1 | L4 |
| 0.375 | 0095 | 23.8 | 22.23 | 16.08 | 6.35 |
| 0.375A | 0095A | 26.97 | 25.4 | 16.86 | 7.93 |
| 0.500 | 0127 | 26.97 | 25.4 | 16.86 | 6.35 |
| 0.500A | 0127A | 26.97 | 25.4 | 16.86 | 7.93 |
| 0.625 | 0158 | 30.94 | 31.75 | 18.44 | 10.31 |
| 0.750 | 0191 | 34.11 | 34.93 | 18.44 | 10.31 |
| 0.875 | 0222 | 42.85 | 41.28 | 20.82 | 11.1 |
| 1.000 | 0254 | 42.85 | 41.28 | 20.82 | 11.1 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing seal performance through advanced simulation and material analysis. All seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Waste Water Treatment: An older APV pump in a water treatment facility was leaking. OEM parts were obsolete. We identified it as a Type 301 style and supplied this replacement. It fitted perfectly and sealed the pump, saving the cost of a new pump.
Testimonials
Thought we'd have to scrap our old pumps until we found this seal. Works great for general water transfer.
—Facility Tech, Water Plant
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Is this for sanitary use?
A: The Type 301 design with a rubber bellow is generally for utility water or non-sanitary applications. For food product contact, we recommend the wave spring or hygienic seal styles (like the W+ series).
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
