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GB/T 25017-2026Marine oil-lubricated stern shaft sealing devices (English PDF)

船艉轴油润滑密封装置

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

July 30, 2026

Implementation date

November 1, 2026

Scope

GB/T 25017-2026 is the English-translated version of 船艉轴油润滑密封装置.

GB/T 25017-2026 is the Chinese standard "Marine oil-lubricated stern shaft sealing devices". Its scope clause reads: This document specifies the requirements, inspection rules, marking, packaging, and transportation of oil-lubricated sealing devices for ship stern shafts (hereinafter referred to as "oil sealing devices").

Regarding storage, product classification is given, and inspection methods are described. This document applies to power shafts where the distance between the stern shaft centerline and the water surface is no more than 20m, and the linear velocity of the stern shaft bushing outer diameter is no more than 7m/s.

Design, manufacture and acceptance of the stern shaft oil lubrication and sealing device. Its clauses include terms and definitions.

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Document preview — GB/T 25017-2026

National Standard of the People's Republic of China

ICS: 47.020.20
Classification: U 47
Replacing: GB/T 25017-2010

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references

1 Scope

This document specifies the requirements, inspection rules, marking, packaging, and transportation of oil-lubricated sealing devices for ship stern shafts (hereinafter referred to as "oil sealing devices").

Regarding storage, product classification is given, and inspection methods are described.

This document applies to power shafts where the distance between the stern shaft centerline and the water surface is no more than 20m, and the linear velocity of the stern shaft bushing outer diameter is no more than 7m/s.

Design, manufacture and acceptance of the stern shaft oil lubrication and sealing device.

2 Normative references

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 699-2015 High-quality carbon structural steel

GB/T 700-2006 Carbon Structural Steel

GB/T 1176-2013 Cast copper and copper alloys

GB/T 2059-2017 Copper and Copper Alloy Strip

GB/T 9439-2023 Gray Cast Iron Parts

GB/T 13384 General Technical Requirements for Packaging of Mechanical and Electrical Products

GB/T 13871.4-2023 Rotary shaft lip seals with sealing elements made of elastomeric materials - Part 4.Performance test procedures

GB/T 14975-2025 Stainless steel seamless tubes for structural use

GB/T 24588-2019 Stainless Steel Spring Wire

CB/T 3862 Marine Machinery Terminology. Shafting and Transmission Systems

HG/T 2811-1996 Rubber Material for Rotary Shaft Lip Seals

3 Terms and Definitions

The terms and definitions defined in CB/T 3862 and the following terms and definitions apply to this document.

3.1 bodymainbody

Components that connect and match the front and rear ends of the stern tube.

3.2

Components used for installing and positioning the sealing ring.

3.3 Press-top gland

The outer end component used to clamp and position the sealing ring.

3.4 shaft sleeve

A sleeve to prevent corrosion and wear on the stern shaft.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Editions of GB/T 25017

Edition	Title	Revision	Status
GB/T 25017-2026	Marine oil-lubricated stern shaft sealing devices	current edition	Current
GB/T 25017-2010	Marine oil-lubricated stern shaft sealing devices	previous edition	In force until 1 November 2026

This page sells the current edition, GB/T 25017-2026. Earlier editions are listed for reference only.

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