• Leak-Free Upgrade: Converts a dripping stuffing box into a zero-leakage system, improving plant hygiene and safety.
• Low Friction: Carbon reduces power consumption compared to the high drag of tight gland packing.
Key Features
• Packing Replacement: Designed to upgrade pumps from gland packing to mechanical sealing without complex modifications.
• Forgiving Face Material: Carbon Graphite is soft enough to conform to slightly worn stationary seats or shafts that might not be perfectly true.
• Flexible Bellow: The large-convolution elastomer bellow accommodates significant shaft end-play and misalignment common in older packed pumps.
Product Specifications
Graphite chemical property | ||||||||
Category | Model | Density (g/cm) | Fractural Strength (MPa) | Compressive Strength (MPa) | Shaw Hardness (HS) | Porosit y(%) | Temperature (℃) | |
Carbon-graphite | Impregnated Epoxy Resin (H) | M106H | 1.75 | 65 | 200 | 85 | <1 | 250 |
M120H | 1.7 | 60 | 180 | 80 | <1 | 250 | ||
Impregnated Furan Resin (K) | M106K | 1.75 | 67 | 200 | 90 | <1 | 250 | |
M120K | 1.7 | 62 | 180 | 85 | <1 | 250 | ||
Impregnated Phenol Aldehyde Resin (F) | M106F | 1.75 | 60 | 200 | 85 | <1 | 250 | |
M120F | 1.7 | 55 | 180 | 80 | <1 | 250 | ||
Antimony Carbon (D) | M106D | 2.3 | 65 | 220 | 90 | <1.5 | 400 | |
M120D | 2.3 | 60 | 220 | 90 | <1.5 | 400 | ||
M254D | 2.3 | 55 | 210 | 65 | <1.5 | 450 | ||
Operating Limits | Units | M106D |
Imperegnated material | Slibium-allay | |
Shaw Hardness | HS | ≥90 |
Indicated Parosity | % | ≤2.0 |
Volume Density | g/m³ | ≥2.20 |
Compressive Strength | Mpa | ≥240 |
Flexural Strength | Mpa | ≥70 |
Coefficient Of Heat Expansion | 10-6·1/℃ | 7.2 |
Using Temperature | ℃ | ≤400 |
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
Irrigation Station: Old split-case pumps used packing that required daily tightening. We installed this Carbon Elastomer Seal. The leaks stopped, and the maintenance team saved 5 hours a week in adjustments.
Testimonials
Best upgrade for our old water pumps. No more water on the floor and the carbon face runs smooth.
—Facility Manager, Agriculture
FAQs about Metal Bellows Seals for High Temperature Pumps
Q: Do I need to machine the shaft?
A: If your shaft is badly scored from old packing, you might need to smooth it or use a shaft sleeve. However, the bellow grips the shaft statically, so minor surface imperfections are usually tolerated better than O-ring seals.

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