Flange sealants and gasket makers
Liquid gaskets for flange and cover faces: anaerobic flange sealants, silicone gasket makers, non-hardening plastic sealing compounds and PTFE filled types.
A cut gasket tears, relaxes as it is compressed and is never in stock in every size; a liquid gasket fits any flange and fills the whole face. On gearbox, pump and cover flanges we select the right gasket sealant for the rigidity and gap of the joint. We ship flange sealing products from stock across Türkiye and abroad, and also sell them through hidroticaret.com, our online store (Turkish).
Types
Anaerobic flange sealants
Liquid gaskets that cure in the absence of air between rigid metal flanges; gearbox, engine and pump housings.
Silicone gasket makers
Permanently elastic gasket that cures with moisture in the air; for flexible covers and covers under vibration, resistant to high temperature and oil.
Non-hardening plastic sealing compounds
Sealing material that stays plastic after assembly and does not harden; for joints that are disassembled often.
PTFE filled flange sealants
Types that provide an instant initial seal and resist high temperature.
How to select
A liquid gasket is selected according to the flange design. On rigid, machined metal flanges an anaerobic sealant cures between the faces and metal to metal contact is maintained. On flexible, sheet metal or vibrating covers a permanently elastic silicone gasket is used. The table below compares the two types.
The gap matters: anaerobic sealants are for narrow gaps; the maximum gap a product can fill is stated in its technical data. For larger gaps or uneven surfaces a silicone gasket is preferred.
The surface is degreased and old gasket residue is removed. With a silicone gasket the parts are assembled before the product skins over; with an anaerobic sealant curing starts after the flanges are closed.
Anaerobic flange sealant vs silicone gasket maker
| Anaerobic flange sealant | Silicone gasket | |
|---|---|---|
| Curing | In the absence of air, in contact with metal | With moisture in the air |
| Suitable flange | Rigid, machined metal | Flexible, sheet metal, vibrating |
| Gap | Narrow gap | Larger gap |
| Result | Rigid, metal to metal contact maintained | Permanently elastic gasket |
| Typical use | Gearbox, pump and engine housings | Oil sumps, sheet metal covers, enclosures |
Frequently asked questions
Can a liquid gasket replace a cut gasket?
On most rigid metal flanges, yes; a liquid gasket fills the whole face and there is no size issue. If the flange design requires a specific gasket thickness, that thickness must be kept.
Anaerobic flange sealant or silicone gasket maker?
Anaerobic on a rigid, machined metal flange; silicone gasket on a flexible or vibrating cover.
How is a flange sealed with liquid gasket taken apart?
Flanges sealed with anaerobic sealant are separated with standard tools; high strength types require careful prying.
Are gasket sealants resistant to oil and temperature?
High temperature and oil resistant types are available; just tell us the working temperature and the fluid.
Stock, sizes and part numbers
We select and supply the products in this group according to the application. Send us your requirement, the size and the operating conditions on WhatsApp and we will recommend the right product.