Type 1 Style Elastomer Bellows Mechanical Seal

Type 1 Style Elastomer Bellows Mechanical Seals are designed for general industrial rotary shaft sealing applications, including centrifugal pumps, mixers, agitators and other rotating equipment. These seals use a flexible elastomer bellows together with a single-coil spring to maintain contact between the rotating seal face and stationary mating ring.

The elastomer bellows provides secondary sealing and accommodates limited axial movement, seal face wear and equipment tolerances during operation.

This conventional mechanical seal design is widely used for industrial pump maintenance and replacement applications where a compact, serviceable sealing arrangement is required.

Features & Advantages

• Elastomer Bellows Design: Flexible rubber bellows provides secondary sealing and supports axial movement compensation.

• Single-Coil Spring: Maintains closing force on the sealing faces during operation.

• Non-Pusher Construction: Eliminates the need for a secondary O-ring sliding along the shaft.

• Automatic Wear Compensation: Bellows movement and spring loading help accommodate progressive seal face wear.

• Multiple Material Options: Available with different elastomers and seal face combinations for specific service conditions.

• General Industrial Compatibility: Suitable for selected pumps, mixers and other rotary shaft equipment.

• Replacement Supply: Different shaft sizes and mating seat configurations can be sourced for maintenance requirements.

Materials & Construction

Type 1 style mechanical seals commonly consist of a rotating seal face, elastomer bellows, single-coil spring, drive components and stationary mating seat.

Common sealing face materials include carbon graphite, silicon carbide and tungsten carbide.

Elastomer bellows may be manufactured from NBR, EPDM or FKM, depending on temperature and fluid compatibility.

Metal components are commonly manufactured from stainless steel or other corrosion-resistant materials.

Typical Applications

• Centrifugal pumps and process pumps

• Water and wastewater equipment

• Industrial mixers and agitators

• Chemical processing equipment

• Cooling and circulation systems

• Pulp and paper machinery

• General industrial pump maintenance

Standard & Replacement Supply

CORA SEALS supplies Type 1 style elastomer bellows mechanical seals for industrial distributors, equipment maintenance companies and aftermarket replacement applications.

Different shaft sizes, elastomer materials and seal face combinations can be sourced according to existing seal dimensions, samples or technical drawings.

For quotations, please provide the shaft diameter, complete seal dimensions, stationary seat dimensions, material requirements and quantity.

Existing seal identification numbers, pump models and photos can also help confirm replacement compatibility. Similar external appearance alone does not guarantee dimensional interchangeability.