NMDS-4700 - Non-Metallic Dry Studs Double seal with Spherical roller bearing & taper ring drive for Reactors

The NMDS-4700 is a Non-Metallic Dry Double Mechanical Seal, with integral spherical roller bearing and taper ring drive. The seal is externally mounted and designed specifically for mixers, agitators, and reactors operating in critical process environments.

Engineered for reliability and efficiency, this seal features non-metallic wetted parts with monolithic, hydraulically balanced seal faces that are specifically engineered for dry, marginal lubrication operation, ensuring superior performance under varying pressures and speeds.

Designed for API Plan 72 and 74 systems, the NMDS-4700 delivers enhanced safety, extended seal life, and reliable performance, making it the ideal choice for high-performance mixing and reaction equipment.

Key Features:

• Dry Running Seal face technology ensures no barrier / buffer fluid contamination of the process fluid. Preferably operates on inert gas such as nitrogen.
• Double Canister Design – Provides a rotary inboard seal running against a clamped L-Shaped Stationary, with springs out of the product media.
• Integral Heavy Duty Bearing - Supplied with double spherical roller bearing ideal for high shaft load support. Can be supplied without bearing or with low/medium shaft load carrying bearing.
• Non-Metallic Wetted Parts - Ideal solution for reactors and vessels containing highly corrosive liquids and gases. Seal is supplied with a glass (enamel) lined flange to the dimensions of DIN 28-159 (where applicable)
• Externally Mounted - The cannister design allows for the seal to be installed direct to an equipment plate without the need for a stuffing box/seal chamber.
• Hydraulically Balanced Seal Faces – Minimizes wear and enhances seal longevity, reducing maintenance and downtime.
• API Plan 72/74 Compatibility – Ideal for un-pressurized buffer fluid systems, helping to reduce process leakage with enhanced safety.
• Studded Canister Construction – The canister single seal provides easy installation and replacement, reducing assembly time and maintenance complexity.
• Integral Double Lip Seal - Prevents dust and debris collecting around outboard seal faces in top entry applications. Supplied with Drain connection orifice for leak face leakage detection.
• Monolithic Seal Faces - Monolithic (one piece) seal faces are the face of choice for high temperature applications over shrink fitted seal faces with differential thermal expansions of the bi-materials.
• Taper Ring Shaft Clamping - Heavy Duty shaft drive.

Upgrade your mixers, agitators, and reactors with the NMDS-4700 – where precision engineering meets innovation.