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ISO 6521-3:2019

Lubricants, industrial oils and related products (Class L) — Family D (compressors) — Part 3: Specifications of categories DRA, DRB, DRC, DRD, DRE, DRF and DRG (lubricants for refrigerating compressors)

Publication date:   Oct 1, 2019

General information

90.93   Standard confirmed   Jun 25, 2025

ISO

ISO/TC 28/SC 4 Classifications and specifications

International Standard

75.100   Lubricants, industrial oils and related products

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Scope

This document specifies the minimum requirements for mineral or synthetic based lubricants intended for use in all types of refrigerating compressors.
NOTE This document can be read in conjunction with ISO 6743-3.

Life cycle

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PUBLISHED
ISO 6521-3:2019
90.93 Standard confirmed
Jun 25, 2025