Mechanical Seals
Sealing solutions for rotating equipment across process industries — from simple single-spring designs to cartridge, agitator reactor and rotary union assemblies.
In this range
14 products- 017 Specs
Single Spring
Robust pusher-type mechanical seal featuring a large-diameter single coil spring. Highly resistant to clogging in dirty fluids and wastewater, offering simple installation and long service life across pumps and agitators.
DesignSingle coil helical spring, unbalanced/balanced pusherShaft size10 mm to 100 mm - 027 Specs
Conical Spring
Compact mechanical seal employing a tapered conical spring that grips the shaft or sleeve, transmitting torque without set screws or drive pins. Complies with DIN 24960 (EN 12756) installation dimensions.
DesignConical tapered spring, rotation directional (RH / LH)StandardDIN 24960 / EN 12756 L1k short housing - 037 Specs
Wave Spring
Engineered mechanical seal utilizing a sinus wave spring instead of traditional helical coils. Reduces the required axial installation length by up to 50%, making it ideal for compact pumps, compressors, and rotary lobe pumps.
DesignSinus wave spring, balanced/unbalanced pusherShaft size14 mm to 100 mm - 047 Specs
Multi Spring
The industry standard for chemical process pumps. Uses a series of small peripheral springs around the seal face to distribute mechanical face load with uniform mathematical precision, ensuring even wear and reliable sealing.
DesignMultiple peripheral springs, balanced or unbalancedStandardISO 3069 / DIN 24960 / API 682 Category 1 - 057 Specs
Rubber Bellow
Highly versatile non-pusher mechanical seal featuring an elastomeric bellows that eliminates sliding O-rings on the shaft. The bellows grips the shaft tightly, accommodating shaft runout and preventing fretting corrosion.
DesignElastomeric rubber bellows, non-pusher, single springShaft size10 mm to 100 mm - 067 Specs
Teflon Bellow
Specialized chemical seal constructed with a machined virgin PTFE bellows and external clamping assembly. Designed for highly aggressive mineral acids, halogens, and solvents where metallic springs cannot contact the liquid.
DesignExternally mounted, PTFE bellows, multi-spring external clampWetted parts100% Virgin PTFE / Glass-filled PTFE / SiC / Ceramic - 077 Specs
Metal Bellow
High-performance mechanical seal featuring an edge-welded metal bellows that acts as both spring element and secondary sealing barrier. Eliminates elastomer O-ring temperature limits, excelling in hot oil, refinery, and cryogenic service.
DesignEdge-welded metal bellows, non-pusher, balancedBellows materialAlloy 718 (Inconel) / Hastelloy-C / AM350 - 087 Specs
Cartridge Seals
Self-contained mechanical seal cartridge pre-assembled on a shaft sleeve with gland plate and centering clips. Eliminates measuring, scribing, and impeller gap setting errors during plant maintenance shutdowns.
StandardFits ANSI B73.1 / ISO 2858 big bore and taper bore seal chambersShaft size24 mm to 120 mm (1 inch to 4.75 inch) - 097 Specs
Double Cartridge Seal
Advanced dual cartridge mechanical seal containing two pairs of sealing faces with an internal barrier fluid chamber. Designed for zero emissions on toxic, carcinogenic, abrasive, or crystallizing process fluids.
ComplianceAPI 682 Type A/B, Arrangement 2 or 3Shaft size24 mm to 140 mm - 107 Specs
Grundfos
Precision-engineered direct replacement mechanical seal assemblies for Grundfos CR, CRN, CH, and TP multistage inline pumps. 100% dimensionally identical to OEM part numbers for plug-and-play maintenance.
CompatibilityGrundfos CR, CRN, CRI, CH, TP, and NB pump seriesShaft size12 mm, 16 mm, 22 mm, 28 mm, 33 mm standard sizes - 117 Specs
Grundfos — Star Type
Specialized splined 'star-drive' mechanical seal cartridge designed for new generation Grundfos CR and CRN multistage pumps. The hex/star drive mechanism provides positive torque transfer directly from the shaft sleeve.
Drive mechanismSplined hex / star positive torque engagementCompatibilityNew generation Grundfos CR 10, 15, 20, 32, 45, 64, 90, 150 series - 127 Specs
Agitator Reactor Seal
Heavy-duty top and side entering double mechanical seal engineered for chemical reaction vessels, fermenters, and mixing autoclaves. Accommodates severe shaft runout, angular deflection, and thermal expansion.
Flange mountDIN 28138 / DIN 28154 sanitary and glass-lined vessel flangesShaft size30 mm to 200 mm - 137 Specs
Rotary Union
High-precision rotating mechanical union designed to introduce or remove heating steam, hot oil, cooling water, or hydraulic fluid into rotating dryer rolls, calenders, and mixer drums without leakage.
PassagesSingle passage or dual passage (fixed / rotating syphon pipe)Connections1/4 inch to 4 inch BSP / NPT threaded or flanged rotor end - 147 Specs
Rotary Joint
Compact, multi-passage rotary joint engineered for high-speed machine tool spindles, indexing tables, and automated manufacturing cells. Transfers coolant, hydraulic clamping oil, and pneumatic air simultaneously.
Passages2, 4, 6, or 8 independent fluid/air passagesSpeed ratingUp to 5000 RPM continuous rotation
