• Precision Wedge: Our Type 9 replacement features a CNC-machined PTFE wedge with optimized angles for reduced friction and better sealing reliability.
• Balanced Options: Available in Type 8B1/9B versions for high-pressure applications (balanced step).
Key Features
• The Chemical Standard: The Type 9 (Wedge) and Type 8-1 (O-ring) are the global benchmarks for chemical and process pumps.
• Extreme Temperature & Chemical Range: Type 9 uses a PTFE wedge for temps up to 260°C and aggressive chemicals. Type 8-1 uses O-rings for better sealing on worn shafts.
• Component Design: Allows for flexible installation on various shaft sizes and seat configurations (Standard, Pinned, Clamped).
Product Specifications
| Size Inch | d | D3 | D2 | D1 | L1 | L2 |
| 0.5 | 12.7 | 26.7 | 13.4 | 25.4 | 20.62 | 7.9 |
| 0.625 | 15.8 | 30.66 | 16.6 | 31.75 | 19.05 | 10.3 |
| 0.75 | 19 | 33.83 | 19.7 | 34.93 | 22.23 | 10.3 |
| 0.875 | 22.2 | 37 | 22.9 | 38.1 | 23.8 | 10.3 |
| 1 | 25.4 | 40.1 | 26.1 | 41.28 | 25.4 | 11.1 |
| 1.125 | 28.5 | 43.36 | 29.3 | 44.45 | 26.97 | 11.1 |
| 1.25 | 31.7 | 48.13 | 32.4 | 47.63 | 26.97 | 11.1 |
| 1.375 | 34.9 | 51.3 | 35.6 | 50.8 | 28.58 | 11.1 |
| 1.5 | 38.1 | 54.48 | 38.8 | 53.98 | 28.58 | 11.1 |
| 1.625 | 41.2 | 60.83 | 42.4 | 60.33 | 34.93 | 12.7 |
| 1.75 | 44.4 | 64 | 45.5 | 63.5 | 34.93 | 12.7 |
| 1.875 | 47.6 | 66.68 | 48.7 | 66.68 | 34.93 | 12.7 |
| 2 | 50.8 | 70.36 | 51.9 | 69.85 | 34.93 | 12.7 |
| 2.125 | 53.9 | 76.7 | 55 | 76.2 | 42.85 | 14.3 |
| 2.25 | 57.1 | 79.88 | 58.2 | 79.38 | 42.85 | 14.3 |
| 2.375 | 60.3 | 83.06 | 61.4 | 82.55 | 42.85 | 14.3 |
| 2.5 | 63.5 | 86.23 | 64.6 | 85.73 | 42.85 | 14.3 |
| 2.625 | 66.6 | 89.4 | 67.7 | 85.73 | 42.85 | 15.9 |
| 2.75 | 69.8 | 92.58 | 70.9 | 88.9 | 42.85 | 15.9 |
| 2.875 | 73 | 95.76 | 74.1 | 95.25 | 42.85 | 15.9 |
| 3 | 76.2 | 97.33 | 77.3 | 98.43 | 42.85 | 15.9 |
| 3.125 | 79.3 | 100.5 | 80.5 | 101.6 | 42.85 | 15.8 |
| 3.25 | 82.5 | 105.28 | 83.6 | 104.78 | 42.85 | 15.8 |
| 3.375 | 85.7 | 108.46 | 86.8 | 107.95 | 42.85 | 15.8 |
| 3.5 | 88.9 | 111.63 | 90 | 111.13 | 42.85 | 15.8 |
| 3.625 | 92 | 114.8 | 93.1 | 114.3 | 42.85 | 15.8 |
| 3.75 | 95.2 | 117.98 | 96.3 | 117.48 | 42.85 | 15.8 |
| 3.875 | 98.4 | 121.16 | 99.5 | 120.65 | 42.85 | 15.8 |
| 4 | 101.6 | 124.33 | 102.7 | 123.83 | 42.85 | 15.8 |
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
Acid Recovery: Replaced OEM Type 9 seals on a sulfuric acid pump. Our aftermarket version used a glass-filled PTFE wedge which offered better creep resistance at high temperatures, extending life by 6 months.
Testimonials
We buy these Type 9 replacements for our ANSI pumps. They are dimensionally identical to the Crane ones and perform flawlessly.
—Maintenance Planner, Chemical Plant
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Can I switch from Type 8 to Type 9?
A: Yes, if your shaft condition is good. The Type 9 PTFE wedge offers better chemical resistance but requires a smoother shaft finish than the Type 8 O-ring.
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
