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O-ring 79,77x5,33 FPM80 brown

Code48011348
In stock25pcs
Priceexcl. VATFrom PLN 25.38/pcs
O-ring 79,77x5,33 FPM80 brown—
PLN 25.38excl. VAT

Price by quantityexcl. VAT

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Technical data

Properties
Seal typeO-ring
Material typeFPM
Hardness Shore-A80
Norm designDIN3771
BrandOEM
Weight11g
O-ring dimension
Inside diameter79,77mm
Cross section5,33mm

Description

The O-ring with dimensions 79.77 × 5.33 mm is made of fluoroelastomer (FPM/FKM) with a hardness of 80 Shore A. The cross-section profile is circular – characteristic of O-ring seals – which ensures even pressure against the sealed surfaces in the joint. The brown colour is typical of FPM material and does not affect performance. The seal conforms to the DIN 3771 standard. Fluoroelastomer (FPM/FKM) is resistant to mineral oils, fuels, hydraulic fluids, acids and oxidising substances. It is used in both static and dynamic seals in the hydraulic, pneumatic, automotive and chemical industries. The seal is a replacement for the following profiles from other manufacturers: Kastas: KO-0797753 Artic Seals / Gapi Group: OR 620 (79.77 × 5.34) Technical data: Seal type: O-ring Material: FPM (fluoroelastomer, FKM) Hardness: 80 Shore A Colour: brown Standard: DIN 3771 Inside diameter (d): 79.77 mm (3.141") Cross-section diameter (d2): 5.33 mm (0.210") Outside diameter (D): ~90.43 mm (3.560")

Material

FPM / FKM (fluoroelastomer, Viton®)

  • Operating temperature-20 °C to +200 °C

Good for high temperature, all fuels and oils, ozone and sunlight. Not for brake fluid, acetone-type solvents, ammonia, hot steam or severe cold.

Chemical resistance
Can be usedDo not use
High temperatures, continuously up to +200 °CAcetone, MEK, dioxane, ethyl acetate and similar solvents
Mineral and synthetic oils, incl. engine oil and oils with aggressive additivesBrake fluid (DOT 3, DOT 4, DOT 5.1): the ring swells
Benzene, toluene, xylene, trichloroethylene (aromatic and chlorinated solvents)Ammonia, amines and alkaline liquids: the rubber breaks down
All fuels: petrol also with bioethanol (E10, E85), diesel, biodiesel, aviation petrolSteam and hot water above +120 to +130 °C
Fire-resistant hydraulic fluid HFD-R (phosphate esters)Formic acid and strong acetic acid (low-molecular organic acids)
Ozone, UV and sunlight (hardly any ageing)Severe cold below -20 °C with standard FPM: it hardens and leaks
Deep vacuum (very little outgassing)Hot fluorine gas and hydrofluoric acid (HF)

Safety: if the seal is heated above +300 °C (fire, gas torch), FPM releases toxic hydrogen fluoride. Do not touch the burnt residue with bare hands: it forms hydrofluoric acid and causes chemical burns.

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