SAE AS 645A-2011 HOSE ASSEMBLY POLYTETRAFLUOROETHYLENE METAL BRAID MEDIUM PRESSURE FLARED 90 O 90 《90对90扩口中压金属织带聚四氟乙烯软管总成》.pdf

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1、 AEROSPACE STANDARD HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE,METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 AS645Copyright 2011 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, me

2、chanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org ISSUED 2007-03REVIS

3、ED 2011-06THIRD ANGLE PROJECTION CUSTODIAN: SAE G-3/G-3D REV.A FEDERAL SUPPLY CLASS AS645 SHEET 1 OF 8 REV. A PROCUREMENT SPECIFICATION: /15/ AS1946SAE Technical Standards Board Rules provide that: “This report ispublishedby SAE toadvance thestate of technicalandengineeringsciences.The useofthis rep

4、ortisentirelyvoluntary, andits applicability and suitability forany particular use,including any patent infringement arising therefrom, isthe soleresponsibilityofthe user.”SAE reviews eachtechnicalreportat least every five years at which time itmay bereaffirmed,revised,orcancelled.SAE invites yourwr

5、ittencomments andsuggestions. SAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/AS645A RATIONALE ESTABLISH CUFF DIMENSIONAL REQUIREMENTS FOR INTEGRAL FIRE SLEEVE ON HOSE AND SLEEVE CODE H & J CONFIGURATIONS, FOR STANDARIZATION PURP

6、OSES. FIGURE 1 - HOSE ASSEMBLY FIGURE 2 - ABRASION SLEEVE ATTACHMENT /7/ /8/ FIGURE 3 - FITTING ANGULAR ORIENTATION /26/ AEROSPACE STANDARD AS645 SHEET 2 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 FIGURE 4 SEE TABLE 7 /27/ TABLE 1 - DIMENSIONS

7、HOSE ASSEMBLY NO. & SIZE /24/ HOSE SIZE (REF) FITTING TYPE /25/ FITTING MATL /5/ THREAD T PER AS8879 (REF) HOSE ID MIN (REF) A MAX C MIN BALLDIA /16/ E MAX WITHOUT SLEEVING /17/ F HEX (REF) G MIN G MAX AS645D (-03) AS645D (-03) AS645D (-03) .188 .188 .188 - S E - CRES AL TI CRES AL TI - .3750-24UNJF

8、-3B .3750-24UNJF-3B .3750-24UNJF-3B .4375-20UNJF-3B .4375-20UNJF-3B .4375-20UNJF-3B - .110 .110 .110 .110 .110 .110 - 1.56 1.56 1.56 1.56 1.56 1.56 - .068 .068 .068 .068 .068 .068 - .49 .49 .49 .49 .49 .49 - .500 .500 .500 .562 .562 .562 - .510 .510 .510 .510 .510 .510 - .680 .680 .680 .635 .635 .63

9、5 AS645E (-04) AS645E (-04) AS645E (-04) .250 .250 .250 R S E CRES AL TI CRES AL TI CRES AL TI .3750-24UNJF-3B .3750-24UNJF-3B .3750-24UNJF-3B .4375-20UNJF-3B .4375-20UNJF-3B .4375-20UNJF-3B .5000-20UNJF-3B .5000-20UNJF-3B .5000-20UNJF-3B .173 .173 .173 .173 .173 .173 .173 .173 .173 1.56 1.56 1.56 1

10、.56 1.56 1.56 1.62 1.62 1.62 .068 .068 .068 .112 .112 .112 .112 .112 .112 .55 .55 .55 .55 .55 .55 .55 .55 .55 .500 .500 .500 .562 .562 .562 .625 .625 .625 .510 .510 .510 .560 .560 .560 .560 .560 .560 .685 .685 .685 .685 .685 .685 .840 .840 .840 AS645F (-05) AS645F (-05) AS645F (-05) .313 .313 .313 R

11、 S E CRES AL TI CRES AL TI CRES AL TI .4375-20UNJF-3B .4375-20UNJF-3B .4375-20UNJF-3B .5000-20UNJF-3B .5000-20UNJF-3B .5000-20UNJF-3B .5625-18UNJF-3B .5625-18UNJF-3B .5625-18UNJF-3B .235 .235 .235 .235 .235 .235 .235 .235 .235 1.62 1.62 1.62 1.62 1.62 1.62 1.81 1.81 1.81 .112 .112 .112 .164 .164 .16

12、4 .164 .164 .164 .63 .63 .63 .63 .63 .63 .63 .63 .63 .562 .562 .562 .625 .625 .625 .688 .688 .688 .560 .560 .560 .635 .635 .635 .635 .635 .635 .840 .840 .840 .840 .840 .840 .885 .885 .885 AS645G (-06) AS645G (-06) AS645G (-06) .375 .375 .375 R S E CRES AL TI CRES AL TI CRES AL TI .5000-20UNJF-3B .50

13、00-20UNJF-3B .5000-20UNJF-3B .5625-18UNJF-3B .5625-18UNJF-3B .5625-18UNJF-3B .7500-16UNJF-3B .7500-16UNJF-3B .7500-16UNJF-3B .298 .298 .298 .298 .298 .298 .298 .298 .298 1.81 1.81 1.81 1.81 1.81 1.81 1.99 1.99 1.99 .164 .164 .164 .218 .218 .218 .218 .218 .218 .70 .70 .70 .70 .70 .70 .70 .70 .70 .625

14、 .625 .625 .688 .688 .688 .875 .875 .875 .635 .635 .635 .700 .700 .700 .700 .700 .700 .885 .885 .885 .885 .885 .885 1.060 1.060 1.060 AEROSPACE STANDARD AS645 SHEET 3 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 HOSE ASSEMBLY NO. & SIZE /24/ HOSE

15、 SIZE (REF) FITTING TYPE /25/ FITTING MATL /5/ THREAD T PER AS8879 (REF) HOSE ID MIN (REF) A MAX C MIN BALLDIA /16/ E MAX WITHOUT SLEEVING /17/ F HEX (REF) G MIN G MAX AS645H (-08) AS645H (-08) AS645H (-08) .500 .500 .500 R S E CRES AL TI CRES AL TI CRES AL TI .5625-18UNJF-3B .5625-18UNJF-3B .5625-1

16、8UNJF-3B .7500-16UNJF-3B .7500-16UNJF-3B .7500-16UNJF-3B .8750-14UNJF-3B .8750-14UNJF-3B .8750-14UNJF-3B .391 .391 .391 .391 .391 .391 .391 .391 .391 1.99 1.99 1.99 1.99 1.99 1.99 2.38 2.38 2.38 .218 .218 .218 .289 .289 .289 .289 .289 .289 .83 .83 .83 .83 .83 .83 .83 .83 .83 .688 .688 .688 .875 .875

17、 .875 1.000 1.000 1.000 .700 .700 .700 .810 .810 .810 .810 .810 .810 1.060 1.060 1.060 1.060 1.060 1.060 1.341 1.341 1.341 AS645J (-10) AS645J (-10) AS645J (-10) .625 .625 .625 R S E CRES AL TI CRES AL TI CRES AL TI .7500-16UNJF-3B .7500-16UNJF-3B .7500-16UNJF-3B .8750-14UNJF-3B .8750-14UNJF-3B .875

18、0-14UNJF-3B 1.0625-12UNJ-3B 1.0625-12UNJ-3B 1.0625-12UNJ-3B .485 .485 .485 .485 .485 .485 .485 .485 .485 2.38 2.38 2.38 2.38 2.38 2.38 2.99 2.99 2.99 .289 .289 .289 .366 .366 .366 .366 .366 .366 .97 .97 .97 .97 .97 .97 .97 .97 .97 .875 .875 .875 1.000 1.000 1.000 1.250 1.250 1.250 .810 .810 .810 1.0

19、91 1.091 1.091 1.091 1.091 1.091 1.341 1.341 1.341 1.341 1.341 1.341 1.591 1.591 1.591 AS645K (-12) AS645K (-12) AS645K (-12) .750 .750 .750 R S E CRES AL TI CRES AL TI CRES AL TI .8750-14UNJF-3B .8750-14UNJF-3B .8750-14UNJF-3B 1.0625-12UNJ-3B 1.0625-12UNJ-3B 1.0625-12UNJ-3B 1.3125-12UNJ-3B 1.3125-1

20、2UNJ-3B 1.3125-12UNJ-3B .615 .615 .615 .615 .615 .615 .615 .615 .615 2.99 2.99 2.99 2.99 2.99 2.99 3.24 3.24 3.24 .366 .366 .366 .466 .466 .466 .466 .466 .466 1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.17 1.000 1.000 1.000 1.250 1.250 1.250 1.500 1.500 1.500 1.091 1.091 1.091 1.341 1.341 1.341 1.341

21、1.341 1.341 1.591 1.591 1.591 1.591 1.591 1.591 1.715 1.715 1.715 AS645M (-16) AS645M (-16) AS645M (-16) 1.000 1.000 1.000 R S E CRES AL TI CRES AL TI CRES AL TI 1.0625-12UNJ-3B 1.0625-12UNJ-3B 1.0625-12UNJ-3B 1.3125-12UNJ-3B 1.3125-12UNJ-3B 1.3125-12UNJ-3B 1.6250-12UNJ-3B 1.6250-12UNJ-3B 1.6250-12U

22、NJ-3B .851 .851 .851 .851 .851 .851 .851 .851 .851 3.24 3.24 3.24 3.24 3.24 3.24 3.68 3.68 3.68 .466 .466 .466 .661 .661 .661 .661 .661 .661 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.250 1.250 1.250 1.500 1.500 1.500 1.812 1.812 1.812 1.341 1.341 1.341 1.465 1.465 1.465 1.465 1.465 1.465 1.715

23、1.715 1.715 1.715 1.715 1.715 2.122 2.122 2.122 AS645N (-20) AS645N (-20) AS645N (-20) 1.250 1.250 1.250 R S E CRES AL TI CRES AL TI CRES AL TI 1.3125-12UNJ-3B 1.3125-12UNJ-3B 1.3125-12UNJ-3B 1.6250-12UNJ-3B 1.6250-12UNJ-3B 1.6250-12UNJ-3B 1.8750-12UNJ-3B 1.8750-12UNJ-3B 1.8750-12UNJ-3B 1.101 1.101

24、1.101 1.101 1.101 1.101 1.101 1.101 1.101 3.68 3.68 3.68 3.68 3.68 3.68 4.17 4.17 4.17 .661 .661 .661 .850 .850 .850 .850 .850 .850 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 1.500 1.500 1.500 1.812 1.812 1.812 2.125 2.125 2.125 1.465 1.465 1.465 1.747 1.747 1.747 1.747 1.747 1.747 2.122 2.122 2.1

25、22 2.122 2.122 2.122 2.372 2.372 2.372 AEROSPACE STANDARD AS645 SHEET 4 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 HOSE ASSEMBLY NO. & SIZE /24/ HOSE SIZE (REF) FITTING TYPE /25/ FITTING MATL /5/ THREAD T PER AS8879 (REF) HOSE ID MIN (REF) A MA

26、X C MIN BALLDIA /16/ E MAX WITHOUT SLEEVING /17/ F HEX (REF) G MIN G MAX AS645P (-24) AS645P (-24) AS645P (-24) 1.500 1.500 1.500 R S - CRES AL TI CRES AL TI - 1.6250-12UNJ-3B 1.6250-12UNJ-3B 1.6250-12UNJ-3B 1.8750-12UNJ-3B 1.8750-12UNJ-3B 1.8750-12UNJ-3B - 1.344 1.344 1.344 1.344 1.344 1.344 - 4.17

27、 4.17 4.17 4.17 4.17 4.17 - .850 .850 .850 1.0631.0631.063- 2.28 2.28 2.28 2.28 2.28 2.28 - 1.812 1.812 1.812 2.125 2.125 2.125 - 1.747 1.747 1.747 1.997 1.997 1.997 - 2.372 2.372 2.372 2.372 2.372 2.372 - TABLE 2 - TOLERANCES HOSE ASSEMBLY LENGTH TOLERANCE UNDER 18 IN 18 TO 36 IN EXCLUSIVE 36 TO 50

28、 IN EXCLUSIVE 50 IN AND OVER .125 .250 .500 1% TABLE 3 - HOSE AND SLEEVE CODES HOSE OR SLEEVE CODE SLEEVE MATERIAL TEMP. LIMIT F - A B C E F G H J K L (-) INDICATES HOSE ONLY, NO SLEEVE (AS1946) ABRASION SLEEVE TUBULAR (PTFE - AS1291 - CODE B) /7/ ABRASION SLEEVE COIL (NYLON AS1294) /8/ FIRE SLEEVE

29、(AS1072 SIL-FG) (15 MIN) /9/ /10/ /14/ ABRASION SLEEVE SHRINK-ON (FEP) /12/ ABRASION SLEEVE SHRINK-ON (POLYOLEFIN AS1073 - CODE B) /12/ FIRE SLEEVE (AS1072 SIL-FG) (5 MIN) /9/ 10/ /13/ FIRE SLEEVE INTEGRAL SILICONE (AS1723) (15 MIN) /14/ /27/ FIRE SLEEVE INTEGRAL SILICONE (5 MIN) /13/ /27/ INTEGRAL

30、ABRASION SLEEVE (BRAIDED) POLYESTER /11/ ABRASION SLEEVE COIL (PTFE - AS1293) /8/ 450 450 275 450 350 275 450 450 450 300 450 AEROSPACE STANDARD AS645 SHEET 5 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 TABLE 4 - HOSE AND OUTSIDE SLEEVE DIAMETER

31、S HOSE OR SLEEVE CODE TOLERANCE HOSE SIZE /6/ .188 HOSE SIZE /6/ .250 HOSE SIZE /6/ .313 HOSE SIZE /6/ .375 HOSE SIZE /6/ .500 HOSE SIZE /6/ .625 HOSE SIZE /6/ .750 HOSE SIZE /6/ 1.000 HOSE SIZE /6/ 1.250 HOSE SIZE /6/ 1.500 - A B C E F G H J K L MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX M

32、IN MAX MIN MAX MIN MAX MIN MAX MIN .285 .234 .390 .320 .339 .260 .692 .487 .301 .248 .341 .278 .692 .487 .641 .537 .641 .450 .378 .320 .375 .267 .347 .304 .473 .393 .409 .330 .692 .533 .375 .320 .411 .348 .692 .533 .641 .594 .641 .550 .430 .390 .445 .333 .417 .367 .524 .454 .472 .393 .780 .598 .438

33、.383 .474 .411 .780 .598 .704 .657 .704 .595 .499 .450 .508 .407 .500 .430 .620 .515 .535 .456 .840 .658 .507 .452 .547 .484 .840 .658 .766 .719 .766 .670 .559 .510 .571 .470 .614 .546 .715 .645 .669 .590 .970 .778 .635 .578 .663 .600 .970 .778 .891 .844 .891 .775 .665 .625 .687 .586 .799 .641 .818

34、.748 .767 .681 1.090 .891 .749 .679 .769 .699 1.090 .891 1.016 .949 1.016 .875 .772 .726 .789 .681 .906 .766 .955 .870 .896 .810 1.220 1.016 .887 .811 .904 .834 1.220 1.016 1.141 1.074 1.141 .995 .887 .841 .914 .828 1.140 1.078 1.295 1.210 1.224 1.122 1.590 1.288 1.288 1.146 1.244 1.158 1.590 1.288

35、1.454 1.394 1.454 1.310 1.210 1.148 1.242 1.138 1.390 1.328 1.550 1.450 1.474 1.372 1.900 1.578 1.460 1.358 1.482 1.396 1.900 1.578 1.704 1.649 1.704 1.508 1.460 1.398 1.492 1.388 1.707 1.637 1.841 1.771 1.807 1.681 2.190 1.887 1.777 1.667 1.823 1.729 2.190 1.887 2.016 1.957 2.016 1.815 1.782 1.712

36、1.809 1.697 TABLE 5 - HOSE WEIGHT MAX - ALL OTHERS REF HOSE OR SLEEVE CODE OR FITTING FITTING TYPE /25/ UNITS HOSESIZE .188 HOSESIZE .250 HOSESIZE .313 HOSESIZE .375 HOSESIZE .500 HOSESIZE .625 HOSE SIZE .750 HOSE SIZE 1.000 HOSE SIZE 1.250 HOSESIZE 1.500- A B C E F G H J K L FIRESLEEVE CLAMP FITTIN

37、G END A/D - CRES B/E - AL C/F - TI R, S, E R, S, E R, S, E LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/IN LB/EA LB/EA LB/EA LB/EA .005 .003 .001 .009 .001 .002 .009 .016 .016 .006 .003 .015 .040 - .024 .007 .004 .001 .009 .002 .002 .009 .018 .017 .008 .004 .016 .055 .019 .033 .008

38、 .004 .002 .011 .002 .002 .011 .020 .018 .009 .004 .018 .075 .026 .045 .010 .006 .002 .012 .002 .002 .012 .023 .021 .011 .005 .019 .085 .029 .051 .012 .007 .003 .017 .003 .003 .017 .030 .027 .015 .008 .021 .155 .053 .093 .016 .008 .004 .018 .004 .003 .018 .037 .035 .018 .009 .023 .235 .080 .141 .020

39、 .010 .004 .028 .006 .005 .028 .045 .042 .023 .011 .025 .330 .112 .198 .045 .014 .005 .030 .007 .006 .030 .085 .079 .050 .018 .029 .535 .182 .321 .058 .020 .006 .040 .007 .006 .040 .107 .100 .063 .022 .033 .995 .338 .597 .074 .045 .009 .047 .008 .007 .047 .132 .123 .081 .028 .037 1.370.466 .822 AERO

40、SPACE STANDARD AS645 SHEET 6 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 TABLE 6 - SLEEVE LENGTH HOSE SIZE LENGTH .188, .250, .313, .375 .500, .625 .750, 1.000 1.250, 1.500 2.00 .25 2.50 .25 3.00 .25 4.00 .25 TABLE 7 - INTEGRAL FIRE SLEEVE CUFF

41、DIMENSIONS /27/ HOSE SIZE (REF) K MAX L MAX .250 .313 .375 .500 .625 .750 1.00 1.25 1.50 .90 .97 1.03 1.15 1.29 1.41 1.71 2.04 2.37 1.61 1.70 2.18 2.50 2.67 2.67 3.10 2.80 2.95 NOTES: 1. CONSTRUCTION AND PERFORMANCE: AS1946, FITTINGS SHALL BE PERMANENTLY ATTACHED TO THE HOSE. 2. OPERATING CHARACTERI

42、STICS: SEE AS1946. 3. MATERIALS: a. HOSE AND FITTINGS - PER AS1946 /5/ b. SLEEVES - SEE APPLICABLE STANDARDS, TABLE 3 /4/ STANDARD COUPLING NUTS SHALL BE IN ACCORDANCE WITH AN818, AS1790, OR AS4370 (AS1791 WIRE AS APPLICABLE) AND MATE WITH AS4395 OR AS5309 FITTING ENDS. NONSTANDARD COUPLING NUTS MAY

43、 BE USED, PROVIDED THEY ARE FUNCTIONALLY EQUIVALENT, AND PROVIDED THEY CANNOT BE REMOVED FROM THE FITTING. NUTS SHALL MEET THE TORQUE TEST REQUIREMENTS PER AS1946. /5/ FOR THE ALUMINUM AND TITANIUM FITTINGS, THE BASIC MATERIALS ARE ALUMINUM AND TITANIUM BUT SOME OF THE COMPONENTS MAY BE STAINLESS ST

44、EEL. /6/ DIAMETERS ARE LISTED FOR CLAMP SELECTION. TUBULAR SLEEVES MAY NOT BE A PERFECT ROUND AND SHALL BE MEASURED WITH A DIAMETER MEASUREMENT TAPE. /7/ THE INSTALLED TUBULAR ABRASION SLEEVES AXIAL MOVEMENT ON THE HOSE SHALL NOT EXCEED .05 IN. ENDS OF THE TUBULAR SLEEVE SHALL BE TERMINATED WITH A L

45、ENGTH OF AMS-DTL-23053/11 (FEP) CLASS 1 OR 2, COLOR CLEAR, PER TABLE 6 AND FIGURE 2. /8/ COIL ABRASION SLEEVES, WHEN ASSEMBLED ON A STRAIGHT HOSE, SHALL HAVE AN AVERAGE GAP BETWEEN COILS NOT EXCEEDING .05 in. DISPLACEMENT OF THE COILS OF THE SLEEVE, CAUSING A GREATER GAP, SHALL NOT BE CAUSE FOR REJE

46、CTION IF THE COILS CAN BE REPOSITIONED TO MEET THE GAP REQUIREMENTS. ENDS OF THE COIL SLEEVE SHALL BE TERMINATED WITH A LENGTH OF HEAT SHRINKABLE SLEEVING IN ACCORDANCE WITH TABLE 6 AND FIGURE 2. CODE “B“ (NYLON COIL) ABRASION SLEEVES SHALL BE TERMINATED WITH AMS-DTL-23053/5 CLASS 1 OR 3, COLOR BLAC

47、K. CODE “L“ (COIL ABRASION) SLEEVES SHALL BE TERMINATED WITH AMS-DTL-23053/12, CLASS 1, COLOR TRANSPARENT, PTFE. (OPTIONAL FOR BOTH SLEEVES AMS-DTL-23053/11 (FEP) CLASS 1 OR 2, COLOR CLEAR). /9/ THE TABLE 4 SLEEVE DIAMETERS FOR AS1072 SLEEVES APPLY WHEN THE SLEEVE IS COMPRESSED, OR CLAMPED, TO CONTA

48、CT THE HOSE. IN THIS CASE, A WRINKLE MAY OCCUR OVER APPROXIMATELY 10% OF THE SLEEVE CIRCUMFERENCE. /10/ THE CUT ENDS OF THE FIRE SLEEVE SHALL BE SEALED USING RTV SILICONE RUBBER, PRIOR TO INSTALLATION, TO PREVENT WICKING OF FLUIDS. THE FIRE SLEEVE ENDS SHALL BE SECURED TO THE HOSE ASSEMBLY END FITTI

49、NGS WITH CORROSION RESISTANT STEEL BANDS. AFTER INSTALLATION, CRACKS OR VOIDS IN THE FIRE SLEEVE, WHICH EXPOSE THE FIBERGLASS, SHALL BE COATED WITH SILICONE RUBBER. /11/ INTEGRAL ABRASION SLEEVE SHALL FORM AN INTEGRAL, PERMANENT PART OF THE HOSE AND SHALL TERMINATE A MAXIMUM OF .250 FROM THE END OF THE COLLAR. AEROSPACE STANDARD AS645 SHEET 7 OF 8 REV. A HOSE ASSEMBLY, POLYTETRAFLUOROETHYLENE, METAL BRAID, MEDIUM PRESSURE, FLARED, 90 TO 90 /12/ FEP AND POLYOLEFIN SHRINK ABRASION SLEEVES SHALL BE SHRUNK TO A SNUG FIT OVER THE HOSE AND END FITTING COLLARS.