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IS 5129-5 (2000): Rotary Shaft Lip Type Seals, Part 5:Identification of Visual Imperfections [MED 30: Gaskets andPacking]

IS 5129 (Part 5) : 2000 IS0 6194-5 : 1990

Indian Standard

ROTARY SHAFT LIP TYPE SEALS PART 5 IDENTIFICATION OF VISUAL IMPERFECTIONS

ICS 23.100.60;83.140.50

0 BIS 2000

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

July 2000 Price Group 4

Gasket and Packing Sectional Committee, ME 30

NATIONAL FOREWORD

This Indian Standard (Part 5) which is identical with IS0 6194-5 :1990 ‘Rotary shaft lip type seals - Part 5 : Identification of visual imperfections’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendations of the Gasket and Packing Sectional Committee and approval of the Mechanical Engineering Division Council.

The text of IS0 standard has been approved as suitable for publication as Indian Standard without deviation. This adopted standard identifies visual imperfections on the rotary shaft lip type seals, dimensionally standardized in IS 5129 (Part 1) : 2OOO/ISO 6194 (Part 1) :1982. This adoption will provide guidance to the purchasers and manufacturers regarding importance of the imperfections and also defines and classifies typical surface imperfections which can impair the functioning of the rotary shaft lip type seals.

In the adopted standard certain conventions are not identical to those used in Indian Standards. Attention is especially drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’.

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a full point (.) as the decimal marker.

In this adopted standard, reference appears to certain International Standards for which Indian Standards also exist.The corresponding Indian Standards which are to be substituted in their place are listed below-along with their degree of equivalence for the editions indicated:

International Standard Corresponding Indian Standard Degree of Equivalence

IS0 5598 : 1985

IS0 6194-l : 1982

IS 10416 :1992 Fluid power systems and components -Vocabulary ( first revision)

IS 5129 (Part 1) : 2000 Rotary shaft lip type seals : Part I Nominal dimensions and tolerances (third revision)

Identical

do

The concerned technical committee has reviewed the provisions of the following International Standard referred in this adopted standard and has decided that it is acceptable for use in conjunction with this standard.

IS0 6194-2 : 1991 Rotary shaft lip type seals-Part 2 : Vocabulary

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of test or analysis shall be rounded off in accordance with IS 2 :1960 ‘Rules for rounding off numerical values ( revised)‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.

IS 5129(Part5):2000 IS0 6194-5 : 1990

1 Scope

Indian Standard ROTARY SHAFT LIP TYPE SEALS PART 5 IDENTIFICATION OF VISUAL IMPERFECTIONS

This part of IS0 6194 shows and identifies visual imperfections on typical rotary shaft lip type seals, dimensionally standardized in IS0 6194-1, as a con- venience for purchasers and manufacturers of rotary shaft lip type seals in their discussions about the importance of imperfections in different applications.

It defines and classifies typical surface imperfec- tions that often impair the function of the rotary shaft lip type seal.

2 ‘Normative references

The following standards contain’ provisions which, through reference in this text, constitute provisions of this part of IS0 6194. At the time of publication,. the editions indicated were valid. All standards are subiect to revision, and parties to agreements based on this part of IS0 6194 are encouraged to investi- gate the possibility of applying the most recent edi- tions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid In- ternational Standards.

IS0 5598:1985, Fluid power systems and components - Vocabulary.

IS0 6194-1:1982, Rotary shaft lip type -seals - Part 1: Nominal dimensions and tolerances.

3 Deflnltlons

For the purposes of this part of IS0 6194, the defi- nitions given in IS0 5598 and IS0 6194-2 apply.

4 Characteristic Imperfections

4.1 Imperfections of configuration

4.1.1 Definition of area of sealing edge (see figure 1 and table 1)

LFF

LBF

LFF = lip front face

LBF = lip back face

SE = sealing edge

NOTE - Dimensions x and y were chosen because, in case of wear, imperfections in this area impair the function of the rotav shaft lip type seal during its lifetime.

Figure 1 - Area of sealing edge

IS0 6194-2:--l), Rotary shaft lip type seals - Part 2: Vocabulary.

1) To be published.

E 5129 ( Part 5 ) : 2000 IS0 6194-5-z 1990

Table 1 Dimensions in milllmetres

Shaft dlameter

I I

X

4 Y

d, > 120

4.1.2 Type and name of imperfections (see figure 2)

(1) Inclusion

(71115) Tear

(2)(14) Crack

(6) Knit line

(8) Cut

(16) Blister

11OH12) Stuck flash

(9) Filler projection

Figure 2 - Type and name of imperfections

4.1.3 Sealing edge imperfections

(1) Inclusion (see figure 3, figure 4 and figure 5) (2) Crack (see figure 6) (3) Rough trim (see figure 7) (4) Step trim (see figure 8)

(5)

;;;

(6) (9) (10)

Nick (see figure 9) Knit line (see figure 10) Tear (see figure 11) Cut (see figure 12) Filler projection (see figure 13) Stuck flash (see figure 14)

4.1.4 Sealing lip imperfections (except sealing edge)

(11) Split (see figure 15) (12) Stuck flash (see figure 16) (1’3) Non-fill (see figure 17) (14) Crack (see figure 18) (15) Tear (see figure 19) (16) Blister (see figure 20)

4.2 Spring imperfections

(17) Deformed spring (see figure 21) (18) Spring with stretched coil portion (see fig- ure 22) (19) Spring with incomplete joint portion (see figure 23)

4.3 Imperfections on outer circumference portion

(20) Scratch (see figure 24) (21) Incorrect chamfer (see figure 25) (22) Incomplete bond (see figure 26)

4.4 Imperfections on minor lip

(23) Tear (see figure 27) (24) Cut or nick (see figure 28) (25) Non-fill (see figure 29) (26) Flash (see figure 30)

5 Identification statement (Reference to

this par-l of IS0 6194)

Use the following statement in test reports, cata- logues and sales literature when electing to comply with this par-l of IS0 6194:

“Visual imperfections identification in accordance with IS0 6194-5, Rotary shaft lip type seals - Part 5: Icfentification of visual imperfections”.

2

IS 5129 ( Part 5 ) : 2000 IS0 6194-5 : 1990

SE’

LFF- LBF SE LFF

Figure 3 - (1) Inclusion: flash Figure 6 - (2) Crack

SE-

LFF-

Figure 4 .- (1) Inclusion: filler Figure 7 - (3) Rough trim

LFF-

Figure 5 - (1) Inclusion: foreign material Figure 8 - (4) Step trim

3

IS 5129 ( Part 5) : 2000 IS0 6194-5 : 1990

Figure 9 - (5) Nick Figure 12 - (8) Cut

Figure IO - (6) Knit line Figure 13 - (9) Filler projection

SE-- LBF.

Figure 11 -- (7) Tear Figure 14 - (10) Stuck flash

4

IS 5129 ( Part 5) : 2000 IS0 6194-5 : 1990

SE LFF

Figure 15 - (71) sdit Figure 18 - (14) Crack

Figure 16 - (12) Stuck flash

Figure 17 - (13) Non-fill

5

IS 5129 ( Part 5) : 2000 IS0 6194-5 : 1990

Figure 21 - (17) Deformed spring Figure 24 - (20) Scratch

Figure 22 - (18) Spring with stretched coil portion Figure 25 - (21) Incorrect chamfer

Figevre 23 - (19) Spring with incomplete joint portion

Figure 26 -- (22) incomplete bond

6

IS 5129 (Part 5) : 2000 IS0 6194-5 : 1990

Figure 27 - (23) Tear Figure 29 - (25) Non-fill

Figure 28 - (24) Cut or nick

7

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country.

Copyright

SIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, ofnecessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS.

preview of Indian Standards

Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of ‘BIS Catalogue’ and ‘Standards: Monthly Additions’.

This Indian Standard has been developed from Dot: No. ME 3O/LM 19 (0430).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

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