Profile seals (DIN 3869)

Profile seals (DIN 3869)

Profile rings (DIN 3869) are used as axial static seals of screw couplings, for example for construction machines, hydraulic presses, hydraulic valves and screw couplings in industry in general. All standard sizes are available from stock in NBR, FKM and EPDM.

Function

Profile rings (DIN 3869) are used as axial-static seals in screw couplings. When the profile ring is mounted, it deforms slightly and this creates the sealing effect. The seal must prevent the medium from leaking so that pressure drops are avoided. The geometry ensures that the ring does not deform during installation. The profile ring prevents dust and grease from penetrating from the outside.

These profile rings (DIN 3869) are used as axial-static seals of screw couplings, for example in construction machines, hydraulic presses, injection moulding machines and hydraulic valves.

Advantages Profile rings (DIN 3869):

• low leakage, even in low-viscosity media

• high resistance to crevice extrusion

• low cross-sectional deformation, even under pressure

• easy to mount

• no distortion in the gap

Profile rings (DIN 3869) NBR 85 black

NBR is highly resistant to mineral oil-based oils and greases, aliphatic hydrocarbons, vegetable and animal oils and greases, hydraulic oils H, H-L, H-LP, hydraulic fluids HFA, HFB, HFC, silicone oils and silicone greases, water (max. 80°C).

NBR is not resistant to high aromatic fuels, aromatic hydrocarbons, chlorinated hydrocarbons, polar solvents, hydraulic fluid HFD, glycol-based brake fluids, ozone, weathering, aging.

Temperature range: -30°C tot +100°C

Profile rings (DIN 3869) FKM 80 green

FKM has a good resistance to mineral oil-based oils and greases, synthetic oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, hydraulic fluids HFD, vegetable and animal oils and greases, silicone oils and greases, fuels, non-polar solvents, ozone, weathering, ageing.

FKM is not resistant to glycol-based brake fluids, polar solvents (e.g., acetone), steam, hot water, amines, alkalis, low molecular weight organic acids (e.g., acetic acid).

Profile rings (DIN 3869) EPDM 80 violet (peroxide cured)

EPDM is highly resistant to hot water and hot steam, many polar solvents (e.g. alcohols, ketones, esters), many organic and inorganic acids and bases, alkaline washing solutions, silicone oils and silicone grease, ozone, weathering, ageing.

EPDM is not resistant to all types of mineral oil products (oils, greases, fuels)

Application temperature range: -45°C to +150°C

Profile rings (DIN 3869) evolast® FFKM (on request)

Also available in FFKM evolast® for applications in particularly critical application conditions.

Temperature range: evolast® FFKM: -40°C tot max. +340°C

The online store for all your profile rings (DIN 3869)

Profile rings (DIN 3869) can easily be ordered online, by telephone or via e-mail from Seal Supply. With your own webshop account, you can find the right products quickly, e.g. via our handy search function 'smartsearch'. You will have 24/7 insight into the available stock, delivery times and your prices and you can place orders with us at any time.

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Standard sizes