Vessel and Agitator seals | Heavy-duty Cartridge Seal for Boiler Feed Circuit Applications
Features mechanical seal Type 5280 (W, D, G, GD)
- California Residents: PROPOSITION 65 WARNING
- Dual-pressurized cartridge seal for stainless steel vessels with rotating seat design inboard for optimal cleanability.
- Modular design concept with interchangeable components.
- Squared PTFE-based secondary sealing elements (PRP-Ring) improve cleanability and secure a broad chemical and temperature application range.
- Design of standard version adapted from DIN 28138 considering Qualified Hygienic Design criteria (QHD).
- Product wetted materials are in compliance with FDA requirements for food contact.
- Special designs or material options such as USP Class VI–compliant polymers are available on request.
- Type 5280 is available in four variants of lubrication system:
5280 W — Liquid-lubricated wet seal
5280 D — Dry-running contacting seal
5280 G — Gas-lubricated non-contacting seal
5280 GD — Gas-lubricated non-contacting inboard, dry-running outboard - Suitable for application in explosive areas.
- Certificates of conformity according to
- European Directive 94/9/EC (ATEX) Cat. 3, 2 or 1 on request.
Recommended Applications Type 5280 (W, D, G, GD)
- Mixer and agitators
- Other rotating equipment
About Mechanical seal Type 5280 (W, D, G, GD)
The first choice for ultra-clean pharmaceutical and biotechnology applications, Type 5280 vessel seals apply Qualified Hygienic Design (QHD) and GMP standards and guidelines to enable the cleaning and sterilization of the product wetted process area with the seal in place (CIP, SIP). Due to the rotating seat design, the inboard sealing components protrude into the vessel, making them accessible for cleaning and/or sterilization devices installed in the reaction vessel. To avoid recontamination of the process vessel via the applied barrier fluid, a steam sterilization of the seal’s barrier room is feasible on request. The rotating seat design allows for application to top, side, or bottom entry mixers or agitators as well as products with a higher viscosity or solid content. This makes the seals a perfect solution for special equipment such as dryers or process filters.
Due to their modular design concept, Type 5280 seals are available in liquid-lubricated (5280 W), gas-lubricated (5280 G) and dry-running (5280 D) versions as well as a unique gas/dry face combination (5280 GD). Advantages of contacting dry-running seals include freedom from contamination by barrier liquid and a low face wear rate together with a cost-efficient, easy-to-install (gas) supply system. Advantages of gas-lubricated versions (G, GD) include the non-contacting and wear- and particle-free operation. The GD design reduces the overall barrier gas consumption compared to G version.
Type 5280 is part of a seal family consisting of different seal types that are suitable for different vessel materials: Type 5280 for steel, Type 5281 for glass-lined and Type 5282 for special alloy vessels.
Design Features mechanical seal Type 5280
- Dual cartridge seal designed according to hygienic design criteria (QHD) with inboard rotating seat for optimal
cleaning in place - Squared PTFE-based secondary sealing elements improve
cleaning and support a broad application range - Product wetted materials compliant with FDA requirements
- Special designs and material options such as USP class VI
compliant polymers are available on request - Reverse pressure capabilities inboard
- Suitable for application in explosive areas. Certificates of
conformity according to European Directive 94/9/EC (ATEX) Cat. 1,
2 and 3 available on request
- Available in four variants of lubrication system:
– 5280/81/82 -W – liquid lubricated wet seal
– 5280/81/82 -D – dry running contacting seal
– 5280/81/82 -G – gas lubricated non-contacting seal
– 5280/81/82 – GD – gas lubricated non-contacting inboard,
dry running outboard - Special carbon materials allow for exceptional operation of gas
seals with dry gas of pharmaceutical quality - Special bearing design for high performance of non-contacting
gas seals - G design advantages include wear-free and particle-free
operation, together with an easy supply system. In addition, the
GD design reduces barrier gas consumption
Operating range mechanical seal Type 5280
- Temperature Limits -40°F to 392°F/-40°C to 200°C (-148°F/-100°C modified)
- Pressure Limits Vacuum to 6 bar(g)
- Speed Limits 400fpm/2m/s
- Size Limits 40mm to 220mm
Product Description Type 5280
The first choice for ultra-clean pharmaceutical and biochemical applications, these seals meet Qualified Hygienic Design (QHD) requirements to enable the cleaning and sterilisation of the product wetted process area with the seal in place (CIP, SIP).
Different versions of the Type 5280 family are suitable for different vessel materials: Type 5280 for steel, Type 5281 for glass-lined and Type 5282 for special alloy vessels. Each version is available in liquid lubricated (W), gas lubricated (G), dry running (D) and a unique gas/dry face combination (GD) version. Although mostly
used in top-entry vessels, the inboard rotating seat design perfectly suits side and bottom-entry vessels.
