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Valvenok Mechanical Seals

Products / Mechanical Seals

Mechanical Seals

Agitator, Cartridge, Dry-Running & Component Seals

A complete range of mechanical seals for agitators, glass-lined reactors and process pumps. Engineered for reliable sealing across the most demanding chemical, pharmaceutical and industrial applications.

Single Agitator Mechanical Seal
AS91

Single Agitator Mechanical Seal

AS91

Single mechanical seal for top-entry agitators. Balanced design with a wide metric size range — reliable sealing for standard mixing and reactor service.

Applications: Chemical Processing, Pharmaceuticals, Mixing & Reactors

Single Seal
Top-Entry Agitators
25mm – 150mm
Balanced Design
View Range →
Double Agitator Mechanical Seal
AS92

Double Agitator Mechanical Seal

AS92

Heavy-duty double mechanical seal for demanding agitator service. Pressurised barrier fluid arrangement for safer sealing of hazardous and high-purity fluids.

Applications: Hazardous Service, Pharmaceuticals, Fine Chemicals

Double Seal
Pressurised Barrier
25mm – 150mm
Heavy-Duty
View Range →
Bottom-Entry Double Mechanical Seal
AS93

Bottom-Entry Double Mechanical Seal

AS93

Compact double mechanical seal engineered specifically for bottom-entry agitators. Optimised geometry for smaller-bore mixers and reactors.

Applications: Bottom-Entry Mixers, Reactors, Pilot Plants

Double Seal
Bottom-Entry
19mm – 75mm
Compact Design
View Range →
Glass-Lined Reactor Single Mechanical Seal
AS94

Glass-Lined Reactor Single Mechanical Seal

AS94

Single mechanical seal purpose-built for glass-lined reactors. Engineered to suit the geometry and service conditions of GL reactor agitator shafts.

Applications: Pharmaceuticals, Fine Chemicals, Specialty Chemicals

Single Seal
Glass-Lined Reactors
40mm – 160mm
GL Service
View Range →
Glass-Lined Reactor Single Mechanical Seal — AS104
AS104

Glass-Lined Reactor Single Mechanical Seal — AS104

AS104

Premium single mechanical seal for glass-lined reactors. Extended size range and upgraded performance envelope for demanding GL reactor service.

Applications: Pharmaceuticals, Fine Chemicals, GL Reactor Service

Single Seal
Glass-Lined Reactors
40mm – 160mm
Premium
View Range →
Glass-Lined Reactor Double Mechanical Seal
AS105

Glass-Lined Reactor Double Mechanical Seal

AS105

Double mechanical seal for glass-lined reactors operating under high pressure or with hazardous fluids. Pressurised barrier fluid arrangement.

Applications: Hazardous GL Service, Pharmaceuticals, Specialty Chemicals

Double Seal
Glass-Lined Reactors
40mm – 160mm
High Pressure
View Range →
Single Cartridge Mechanical Seal
CS52CX

Single Cartridge Mechanical Seal

CS52CX

Pre-assembled single cartridge seal for drop-in installation. Eliminates installation error and reduces downtime — ideal for general process pump service.

Applications: Process Pumps, Water Treatment, General Industry

Single Cartridge
Pre-Assembled
25mm – 90mm
Drop-In Install
View Range →
Double Cartridge Mechanical Seal
CS53CX

Double Cartridge Mechanical Seal

CS53CX

Pre-assembled double cartridge seal for safer sealing of hazardous, toxic or high-purity fluids. Drop-in installation with pressurised or unpressurised barrier fluid.

Applications: Hazardous Service, Chemical Processing, Pharmaceuticals

Double Cartridge
Pre-Assembled
25mm – 90mm
Hazardous Service
View Range →
Dry-Running Mechanical Seal
DS71

Dry-Running Mechanical Seal

DS71

Dry-running mechanical seal engineered to operate without process liquid lubrication. Wide size range from 15mm to 150mm for diverse dry or gas service.

Applications: Dry Service, Gas Pumps, Specialty Applications

Dry-Running
No Liquid Lubrication
15mm – 150mm
Gas-Compatible
View Range →
Conical Spring Unbalanced Seal
PS31

Conical Spring Unbalanced Seal

PS31

Conical spring unbalanced component seal in imperial sizes. Versatile pusher seal for general-purpose pump service across the full 0.5" – 3.5" range.

Applications: General Pumps, Water, Light Industry

Conical Spring
Unbalanced
0.5" – 3.5"
Component Seal
View Range →
Single Spring Mechanical Seal
PS34

Single Spring Mechanical Seal

PS34

Heavy-duty single spring component seal in imperial sizes. Robust pusher seal for industrial pump service across the full 0.875" – 3.5" range.

Applications: Industrial Pumps, Process Service, General Industry

Single Spring
Imperial Sizes
0.875" – 3.5"
Heavy-Duty
View Range →
Elastomer Bellows Mechanical Seal
PS35E

Elastomer Bellows Mechanical Seal

Elastomer-bellows component seal with broad imperial size range. Bellows construction accommodates shaft movement and thermal expansion.

Applications: HVAC, Water, Chemical Pumps, General Industry

Elastomer Bellows
Imperial Sizes
0.5" – 4.0"
Wide Range
View Range →
Reverse Balanced Mechanical Seal
PS37

Reverse Balanced Mechanical Seal

PS37

Reverse-balanced multi-spring component seal for high-pressure pump service. Engineered for balanced operation across the 0.75" – 4.0" imperial range.

Applications: High-Pressure Pumps, Oil & Gas, Process Service

Reverse Balanced
Multi-Spring
0.75" – 4.0"
High Pressure
View Range →
Multi-Spring Mechanical Seal
PS38

Multi-Spring Mechanical Seal

PS38

Premium multi-spring component seal with extended imperial size range. Balanced operation and even spring load distribution for demanding service.

Applications: Demanding Service, Oil & Gas, Chemical Processing

Multi-Spring
Premium
0.625" – 4.0"
Balanced
View Range →
Single Agitator Mechanical Seal — Narrow Profile
AS91N

Single Agitator Mechanical Seal — Narrow Profile

AS91N

Narrow-profile single mechanical seal for top-entry agitators with tight space constraints. Built to order — contact us for sizing, materials and lead time.

Applications: Chemical Processing, Pharmaceuticals, Space-Constrained Installations

Single Seal
Narrow Profile
Top-Entry Agitators
Made to Order
View Range →
Single Agitator Mechanical Seal — Extended Range
AS95

Single Agitator Mechanical Seal — Extended Range

AS95

Single mechanical seal for agitator service across an extended size range. Made to order — contact us for sizing, materials and lead time.

Applications: Chemical Processing, Pharmaceuticals, Mixing & Reactors

Single Seal
Extended Range
Agitator Service
Made to Order
View Range →
Double Agitator Mechanical Seal — High Performance
AS98

Double Agitator Mechanical Seal — High Performance

AS98

High-performance double mechanical seal for demanding agitator service. Pressurised barrier fluid arrangement for hazardous and high-purity fluids. Made to order.

Applications: Hazardous Service, Pharmaceuticals, Fine Chemicals

Double Seal
High Performance
Pressurised Barrier
Made to Order
View Range →
Single Agitator Mechanical Seal — Narrow Profile
AS99N

Single Agitator Mechanical Seal — Narrow Profile

AS99N

Narrow-profile single mechanical seal for tight installations. Engineered for agitators with restricted radial space. Made to order — contact us for specifications and lead time.

Applications: Space-Constrained Installations, Pharmaceuticals, Specialty Chemicals

Single Seal
Narrow Profile
Agitator Service
Made to Order
View Range →
Glass-Lined Reactor Mechanical Seal
AS103

Glass-Lined Reactor Mechanical Seal

AS103

Mechanical seal engineered for glass-lined reactor service. Built to match GL reactor geometry and service conditions. Made to order — contact us for sizing and materials.

Applications: Pharmaceuticals, Fine Chemicals, Specialty Chemicals

Glass-Lined Reactors
GL Service
Made to Order
Custom Sizing
View Range →
Heavy-Duty Agitator Mechanical Seal
AS110

Heavy-Duty Agitator Mechanical Seal

AS110

Heavy-duty mechanical seal for large-bore agitators and high-torque service. Built to order for specific shaft sizes and service conditions.

Applications: Heavy Industry, Large Reactors, High-Torque Agitators

Heavy-Duty
Large Bore
High-Torque Service
Made to Order
View Range →
Lip Seal — Agitator Service
AS-LB-01

Lip Seal — Agitator Service

AS-LB-01

Lip-seal arrangement for agitator service where mechanical seals are unsuitable. Cost-effective sealing for low-pressure, low-speed applications. Made to order.

Applications: Low-Pressure Mixers, Storage Tank Agitators, General Service

Lip Seal
Low Pressure
Agitator Service
Made to Order
View Range →
Lip Seal — Heavy-Duty Agitator Service
AS-LB-02

Lip Seal — Heavy-Duty Agitator Service

AS-LB-02

Heavy-duty lip-seal arrangement for agitator service. Upgraded performance over AS-LB-01 for higher loads and extended life. Made to order.

Applications: Industrial Mixers, Reactor Agitators, Heavy-Duty Service

Lip Seal
Heavy-Duty
Extended Life
Made to Order
View Range →
Bellows Mechanical Seal
BS14

Bellows Mechanical Seal

BS14

Metal bellows mechanical seal for high-temperature service and applications where elastomers are unsuitable. Made to order — contact us for sizing and materials.

Applications: High-Temperature Service, Hot Oil, Steam, Specialty Chemicals

Bellows Seal
High Temperature
Elastomer-Free
Made to Order
View Range →
Double Bellows Mechanical Seal
BS14D

Double Bellows Mechanical Seal

BS14D

Double metal bellows mechanical seal for high-temperature service with pressurised barrier fluid. Safer sealing of hazardous fluids at elevated temperatures. Made to order.

Applications: Hazardous High-Temp Service, Hot Oil, Specialty Chemicals

Double Bellows
High Temperature
Pressurised Barrier
Made to Order
View Range →

24 Seal Models

Complete Range

Single & Double

Arrangements

Metric & Imperial

Size Standards

0.5" – 160mm

Size Coverage

Fast Dispatch

Availability