# 6.6.2 Anaerobic Gasketing Adhesives

> From: LOCTITE®X Digital Manual for Bonding (https://www.loctitex.com/en/manuals/bonding/6.6.2-anaerobic-gasketing-adhesives/)

#### 6.6.2 Anaerobic Gasketing Adhesives

These adhesives are essentially a form-in-place (FIP) liquid gasket which cures after parts are assembled. These gasket products are applied as a liquid on one part of the metallic substrate or flange joint surface; when parts are assembled, the anaerobic gasket material flows into voids, filling the gap and forming a durable seal after curing by the anaerobic mechanism.

These adhesives are used in many markets and industries. They are convenient to dispense manually, semi-automatically or automatically, and they add structural strength to assemblies, eliminate compression set and fastener loosening, and allow true unitised assembly against slip and creep.

_Figure 187 Microscopic studies reveal that actual metal-to-metal contact between the most carefully finished interfacing parts does not exceed 25-35%. Anaerobic gasket adhesives fill 100% of the gaps_

![Figure 187 Microscopic studies reveal that actual metal-to-metal contact between the most carefully finished interfacing parts does not exceed 25-35%. Anaerobic gasket adhesives fill 100% of the gaps](/en/manuals/bonding/assets/img/metal-contact-percent-adhesive-fill-gap-seal.jpg)

The following are some additional benefits of anaerobic gasket adhesives:

- No gasket relaxation
- No shimming
- Structural strength
- Excess material remains liquid and can be easily removed
- Accommodates poor surface finish
- No cure before assembly
- Reduce inventory costs
- Chemical compatibility
- High temperature resistance (up to 204°C (400°F))
- Easy repairability