Products → Mechanical Seals → Cartridge Seals → S20
S20
Reliable, Easy-to-Install Seal for Standard Industrial Applications
The Chesterton S20 is a single cartridge seal engineered for durability and simplicity in a wide range of light to moderate-duty applications. Ideal for pumps and rotating equipment with standard ANSI and ISO dimensions, the S20 offers balanced sealing performance, excellent alignment, and reduced installation error.
With a compact profile and factory-set design, the S20 streamlines maintenance and helps reduce downtime. It's a dependable, cost-effective solution for general industry use where consistent performance and ease of installation are essential.
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Product Features
✔ Tandem design for full pressure backup capability
✔ Quick to repair with innovative cassette feature
5 key seal design features
✔ Balanced Design
✔ Non-Fretting
✔ Monolithic Seal Faces
✔ Stationary Design
✔ Protected Springs
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25 mm to 120 mm (1.000 inch to 4.750 inch)
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ISO-3069C, ASME B73.1, ASME B73.2
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S20CS - Coatings Seal
S20OS - Oversized Seal Chambers
Technical Data ↓
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CB, TC, SSC
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FKM, EPDM, FEPM, FFKM
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EN 1.4401 (316SS), Other Metallurgies available on request
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EN 2.4819 (Alloy C-276)
Materials ↓
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711 mm (28") Hg Vacuum to 30 bar g (450 psig)
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-55 to 300 °C (-67 to 570 °F)
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25 m/s ( 5000 fpm )
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Seal pressure capabilities are dependent on the fluid sealed, temperature, speed, and seal face combinations. For operation outside the limits and additional materials consult Chesterton Mechanical Seal Engineering.