3M™ 7711 Pre-Filter

The 3M™ 7711 is a particulate pre-filter that extends the life of gas and vapour cartridges by capturing dusts and mists before they reach the cartridge. Adding a pre-filter is a cost-effective way to keep cartridges working longer in dusty environments.

Product overview

The 7711 fits over 3M bayonet cartridges on 6000, 7000 and FF-400 series respirators, held in place by a filter retainer. By trapping particulates first, it protects the cartridge bed and helps maintain low breathing resistance during combined gas and dust exposure.

Key features and benefits

• Extends cartridge life: captures dusts and mists before they reach the cartridge.
• Cost-effective: a low-cost pad protects more expensive cartridges.
• Easy to fit: mounts over the cartridge and is held by a retainer.
• Wide compatibility: works with 3M 6000, 7000 and FF-400 series cartridges.

Typical applications

The 7711 suits spray painting, chemical handling and maintenance tasks where both gas/vapour and particulate hazards are present together.

Technical specifications

Why buy from Techmaster Electronics

Techmaster Electronics is an authorised supplier of 3M personal protective equipment in Vietnam. We provide genuine filters and retainers, advice on respirator and cartridge pairing, and responsive after-sales support nationwide.

Frequently asked questions

What does a pre-filter do?
It captures dusts and mists before they reach the gas/vapour cartridge, extending the cartridge’s usable life.

How is the 7711 attached?
It mounts over a 3M bayonet cartridge and is held in place by a 3M filter retainer.

When should I replace it?
Replace the pre-filter when breathing becomes more difficult or when it is soiled or damaged.