PSX: Positive Seal

The PSX: Positive Seal is a high-performance flexible pipe-to-manhole connector that offers easy installation and long-term performance in one convenient product.

Used in stormwater and wastewater applications
Meets or exceeds ASTM C 923, ASTM C 1244, ASTM C 1478, ASTM F 2510

Category: Manhole Connectors

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How It Works

The connector fits into a cast or cored hole.
A power sleeve made from tempered series 304 stainless steel expands with a calibrated hydraulic installation tool.
Take-up clamps made from series 304 stainless steel with quick adjusting screws secure the connector to the pipe.

Why It's Better

Safely install from outside of the manhole preventing falls from crawling down into structures.
All stainless-steel components with no welds or rivets creating a stronger product.
Precision molding provides accurate compensation for hole size variations.
Contractor can save time and money by backfilling immediately.

Where To Use

Manholes
Wet wells
Square pump and lift stations
Stormwater structures
On-site treatment structures
Junction chambers
Grease interceptors

Meets or Exceeds

ASTM C 923 – Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures, Pipes, and Laterals
ASTM C 1244 Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test
ASTM C 1478 – Standard Specification for Storm Drain Resilient Connectors Between Reinforced Concrete Storm Sewer Structures, Pipes, and Laterals
ASTM F 2510 Standard Specification for Resilient Connectors Between Reinforced Concrete Manhole Structures and Corrugated High Density Polyethylene Drainage Pipes

TYPICAL TEST RESULTS for PSX:Positive Seal (as in ASTM C 923 and C 1478)
Test	ASTM Test Method	Test Requirements	Typical Result
CHEMICAL RESISTANCE; 1N SULFURIC ACID and 1N HYDROCHLORIC ACID	D 534, AT 22ºC FOR 48 HRS	NO WEIGHT LOSS NO WEIGHT LOSS	NO WEIGHT LOSS NO WEIGHT LOSS
TENSILE STRENGTH	D 412	1200 PSI, MIN.	2400 PSI
ELONGATION AT BREAK	D 412	350%, MIN.	600%
HARDNESS	D 2240 (SHORE A DUROMETER)	±5 FROM THE MANUFACTURER’S SPECIFIED HARDNESS	<2
ACCELERATED OVEN-AGING	D 573, 70± 1ºC FOR 7 DAYS	DECREASE OF 15%, MAX. OF ORIGINAL TENSILE STRENGTH, DECREASE OF 20%, MAX. OF ELONGATION	-13% TENSILE CHANGE, -14% ELONGATION CHANGE
COMPRESSION TEST	D 395, METHOD B, AT 70ºC FOR 22 HRS	DECREASE OF 25%, MAX. OF ORIGINAL DEFLECTION	13%
WATER ABSORPTION	D 471 IMMERSE 0.75 BY 2-IN.SPECIMEN IN DISTILLED WATER AT 70ºC FOR 48 hrs	INCREASE OF 10%, MAX. OR ORIGINAL BY WEIGHT	3.50%
OZONE RESISTANCE	D 1171	RATING 0	PASS
LOW-TEMP, BRITTLE POINT	D 746	NO FRACTURE AT -40ºC	PASS
TEAR RESISTANCE	D 624, METHOD B	200 LBF/IN. (MIN.)	325 LBF/IN.

A watertight flexible pipe-to-manhole connector shall be employed in the connection of the sanitary sewer and/or stormwater pipe to precast manholes or other structures.

The connector shall be PSX: POSITIVE SEAL as manufactured by Press-Seal Corporation, Fort Wayne, Indiana, or approved equal.

The connector assembly shall be the sole element relied on to assure a flexible watertight seal of the pipe to the structure. The connector shall consist of a rubber gasket, an internal expansion sleeve, and one or more external compression take-up clamps. Approved materials for the connector shall be virgin rubber and Series 300 non-magnetic stainless steel. No plastic components shall be permitted.

The rubber gasket element shall be constructed solely of synthetic or natural rubber, shall meet/exceed the requirements of ASTM C 923, and shall have a minimum tensile strength of 1600 PSI. Minimum thickness of the cross-section shall be 0.275 inches (7 mm).

The internal expansion sleeve components shall be made of Series 300 non-magnetic stainless steel and shall utilize no welds in their construction.

Installation shall be performed using a calibrated installation tool available from the connector manufacturer. Installation of the sleeve shall require no retightening after the initial installation.

The external compression take-up clamp(s) shall be constructed of Series 300 non-magnetic stainless steel and shall utilize no welds in its constructions. The clamp(s) shall be installed by torqueing the adjusting screw using a torque-setting wrench available from the connector manufacturer.

Selection of the proper size connector for the manhole and pipe requirement, and installation thereof, shall be in strict conformance with the recommendations of the connector manufacturer. Any dead end pipe stubs installed in connectors shall be restrained from movement per ASTM C 923.

The finished connection shall provide sealing to 13 psi (minimum), and shall accommodate deflection of pipe to 7 degrees (minimum) without loss of seal.

Vacuum testing shall be conducted in strict conformance with ASTM C 1244 prior to backfill. Other testing shall be conducted in strict conformance with the requirements of the connector manufacturer.

Inspect hole. Wall surface must be CLEAN and SMOOTH. Fill all voids with
non-shrink cementations patching compound and allow to dry.
Place gasket into porthole with holes in stainless steel power sleeve at the 6 o’clock position. Gasket should rest 1/2” to 1” from the inside of the hole.
Place hydraulic tool inside gasket and open slightly by closing valve and pumping the handle on hydraulic unit. Align and insert studs of tool in
holes of power sleeve. (see illustration A)
Once studs are inserted in power sleeve, pump hydraulic unit until gasket stays positioned in the hole without any hand assistance. Gasket
must be aligned square in the hole at this point. Make any necessary
adjustments in sleeve ends to ensure that they are aligned on top of
each other.
Pump the hydraulic unit to start expanding power sleeve. (see illustration B)
Continue pumping the hydraulic unit while watching sleeve ends to
make sure they stay aligned on top of each other.
Once the sleeve ends snap into place face-to-face, check the gauge to
make sure minimum pressure (see above) has been achieved.
Relax the power sleeve slightly by releasing valve on hydraulic pump.
This will interlock the ends of the power sleeve to ensure a positive seal.

PIPE O.D./IN	PIPE O.D. mm	PIPE DESCRIPTION	NOMINAL HOLE SIZE/IN.	NOMINAL HOLE SIZE/mm.	PSX: POSITIVE SEAL SIZE DESIGNATION
1.90	48 mm	1.5” PVC	8.00	203 mm	8QRS “STEP S” PSX
2.38	60 mm	2” PVC	8.00	203 mm	8QRS “STEP S” PSX
2.50	64 mm	2” CI/DI	8.00	203 mm	8QRS “STEP S” PSX
2.75	70 mm	2.25” CI/DI	8.00	203 mm	8QRS “STEP R” PSX
3.50	89 mm	3” PVC	8.00	203 mm	8QRS “STEP R” PSX
3.96	101 mm	3” CI/DI	8.00	203 mm	8QRS “STEP Q” PSX
4.21	107 mm	4” PVC D3033 / D3034	8.00	203 mm	8QRS “STEP Q” PSX
4.30	109 mm	4” TRUSS	8.00	203 mm	8QRS “STEP Q” PSX
4.80	122 mm	4” CI/DI 4” C900 PVC	8.00	203 mm	8QRS “STEP Q” PSX OR 8A PSX
6.275	159 mm	6” PVC D3033/ D3034	8.00	203 mm	8B PSX
			9.00	229 mm	9A PSX
			11.00	279 mm	11Y PSX
			12.00	305 mm	12Y PSX
6.30	160 mm	6” TRUSS	8.00	203 mm	8B PSX
			9.00	229 mm	9A PSX
			11.00	279 mm	11Y PSX
			12.00	305 mm	12Y PSX
6.625	168 mm	6” PVC D2241	9.00	229 mm	9A PSX OR 9B PSX
			10.00	254 mm	10A PSX
			11.00	279 mm	11Y PSX
			12.00	305 mm	12Y PSX
6.90	175 mm	6” CI/DI 6” C900 PVC	9.00	229 mm	9A PSX OR 9B PSX
			10.00	254 mm	10A PSX
			11.00	279 mm	11Y PSX
			12.00	305 mm	12Y PSX
8.16	207 mm	8” PVC D3033	10.00	254 mm	10B PSX
			11.00	279 mm	11M PSX OR 11A PSX
			12.00	305 mm	12M PSX
8.40	213 mm	8” PVC D3034	10.00	254 mm	10B PSX
			11.00	279 mm	11M PSX OR 11A PSX
			12.00	305 mm	12M PSX
8.625	219 mm	8” PVC D2241	11.00	279 mm	11M OR 11A OR 11B PSX
8.625	219 mm	8” PVC D2241	12.00	305 mm	12M PSX OR 12A PSX
9.05	230 mm	8” CI/DI 8” C900 PVC	11.00	279 mm	11M PSX OR 11B PSX
			12.00	305 mm	12M PSX OR 12A PSX
			13.00	330 mm	13L PSX
9.40	239 mm	8” TRUSS	11.00	279 mm	11B PSX
			12.00	305 mm	12A PSX OR 12B PSX
			13.00	330 mm	13L PSX
10.20	259 mm	10” PVC D3033	12.00	305 mm	12B PSX
			13.00	330 mm	13A PSX
			14.00	356 mm	14L PSX
			16.00	406 mm	16Y PSX
10.50	267 mm	10” PVC D3034	13.00	330 mm	13A PSX OR 13B PSX
			14.00	356 mm	14M PSX
			16.00	406 mm	16Y PSX
10.75	273 mm	m 10” PVC D2241	13.00	330 mm	13A PSX OR 13B PSX
			14.00	356 mm	14M PSX
			16.00	406 mm	16Y PSX
11.10	282 mm	10” CI/DI 10” C900 PVC	13.00	330 mm	13B PSX
			14.00	356 mm	14M PSX OR 14A PSX
			16.00	406 mm	16Y PSX
11.80	300 mm	10” TRUSS	14.00	356 mm	14B PSX
11.80	300 mm	10” TRUSS	16.00	406 mm	16L PSX
12.24	311 mm	12” PVC D3033	14.00	356 mm	14B PSX
12.24	311 mm	12” PVC D3033	16.00	406 mm	16L PSX OR 16M PSX
12.50	318 mm	12” PVC D3034	16.00	406 mm	16M PSX
12.75	324 mm	12” PVC D2241	16.00	406 mm	16M PSX
13.20	335 mm	12” CI/DI	16.00	406 mm	16M PSX OR 16A PSX
13.20	335 mm	12” CI/DI	18.00	406 mm	18L PSX-2
14.10	358 mm	12” TRUSS	16.00	406 mm	16B PSX
14.10	358 mm	12” TRUSS	18.00	457 mm	18L PSX-2
15.30	389 mm	15” PVC D3033 / D3034 14” CI/DI	18.00	457 mm	18M PSX-2
15.30	389 mm	15” PVC D3033 / D3034 14” CI/DI	20.00	508 mm	20L PSX-2
16.00	406 mm	12” RCP WALL B	18.00	457 mm	18B PSX-2
16.00	406 mm	12” RCP WALL B	20.00	508 mm	20L PSX-2 OR 20A PSX-2
17.40	442 mm	16” CI/DI	20.00	508 mm	20B PSX-2
17.40	442 mm	16” CI/DI	22.00	559 mm	22L PSX-2
17.70	450 mm	15” TRUSS	20.00	508 mm	20B PSX-2
17.70	450 mm	15” TRUSS	22.00	559 mm	22L PSX-2
18.701	475 mm	18” PVC F679	22.00	559 mm	22M PSX-2
19.50	495 mm	18” CI/DI 15” RCP WALL B	22.00	559 mm	22M PSX-2 OR 22B PSX-2
19.50	495 mm	18” CI/DI 15” RCP WALL B	24.00	610 mm	24L PSX-2
21.60	549 mm	20” CI/D	24.00	610 mm	24A PSX-2 OR 24B PSX-2
21.60	549 mm	20” CI/D	26.00	660 mm	26L PSX-2
22.047	560 mm	21” PVC F679	24.00	610 mm	24A PSX-2 OR 24B PSX-2
22.047	560 mm	21” PVC F679	26.00	660 mm	26L PSX-2
23.00	584 mm	18” RCP WALL B	26.00	660 mm	26A PSX-2
24.803	630 mm	24” PVC F679	28.00	711 mm	28A PSX-2
25.8	655 mm	24” CI/DI	28.00	711 mm	28B PSX-2
25.8	655 mm	24” CI/DI	30.00	762 mm	30L PSX-2
26.50	673 mm	21” RCP WALL B	30.00	762 mm	30L PSX-2 OR 30A PSX-2
27.95	710 mm	27” PVC F679	30.00	762 mm	30B PSX-2
27.95	710 mm	27” PVC F679	32.00	813 mm	32L PSX-2
30.00	762 mm	24” RCP WALL B	32.00	813 mm	32B PSX-2
30.00	762 mm	24” RCP WALL B	34.00	864 mm	34L PSX-2
31.50	800 mm	24” RCP WALL C	34.00	864 mm	34A PSX-2 OR 34B PSX-2
31.50	800 mm	24” RCP WALL C	36.00	914 mm	36L PSX-2
32.00	813 mm	30” CI/DI	34.00	864 mm	34B PSX-2
32.00	813 mm	30” CI/DI	36.00	914 mm	36A PSX-2
33.50	851 mm	27” RCP WALL B	36.00	914 mm	36B PSX-2
33.50	851 mm	27” RCP WALL B	38.00	965 mm	38A PSX-2
35.00	889 mm	27” RCP WALL C	38.00	965 mm	38B PSX-2
35.00	889 mm	27” RCP WALL C	40.00	1016 mm	40L PSX-2
37.00	940 mm	30” RCP WALL B	40.00	1016 mm	40A PSX-2
38.30	973 mm	36” CI/DI	40.00	1016 mm	40B PSX-2
38.30	973 mm	36” CI/DI	42.00	1067 mm	42A PSX-2
38.50	978 mm	30” RCP WALL C	42.00	1067 mm	42A PSX-2
44.00	1118 mm	36” RCP WALL B	46.00	1168 mm	46B PSX-2
44.50	1130 mm	42” CI/DI	48.00	1219 mm	48L PSX-2
45.50	1156 mm	36” RCP WALL C	50.00	1270 mm	50S1 PSX-2
50.80	1290 mm	48” CI/DI	I 54.00	1372 mm	54S PSX-2
51.00	1295 mm	42” RCP WALL B	I 54.00	1372 mm	54S PSX-2
52.50	1334 mm	42” RCP WALL C	56.00	1422 mm	56A PSX-2

NOMINAL HOLE SIZE		PSX SIZE DESIGNATION	PSX GASKET I.D. (INCHES)		PIPE O.D. ACCOMMODATION RANGE INCHES (mm)		PSX TAKE-UP CLAMP		MINIMUM SIZE ROUND STRUCTURE (INCHES)
INCH	mm		INCH	mm			(QTY)	PART #
8	203 mm	8QRS STEP “S” 8QRS STEP “R” 8QRS STEP “Q” *6-8QRS	2.20 3.50 4.60 N/A	56 mm 89 mm 117 mm N/A	1.70 TO 2.50 2.75 TO 3.75 3.75 TO 4.80 1.90 TO 4.80	43 - 64 mm 70 - 95 mm 95 - 122 mm 48 - 122 mm	(1) (1) (1) (1)	600-088 600-088 600-088 600-088	24
8	203 mm	8A 8B 08-11 08-06	5.64 6.45 5.64 6.38	143 mm 164 mm 143 mm 162 mm	4.75 TO 5.75 5.75 TO 6.30 4.75 TO 5.75 5.75 TO 6.40	121 - 146 mm 146 - 160 mm 121 - 146 mm 146 - 163 mm	(1) (1) (1) (1)	600-128 600-128 601-104 601-128	24
9	229 MM	9A 9B 09-06 09-22	6.77 7.27 6.45 7.27	172 mm 185 mm 164 mm 185 mm	6.00 TO 7.00 6.40 TO 7.50 6.00 TO 7.00 6.40 TO 7.50	152 - 178 mm 163 - 191 mm 152 - 178 mm 163 - 191 mm	(1) (1) (1) (1)	600-128 600-128 601-128 601-128	24
10	254 mm	10A 10B 10-11 10-22	7.33 8.21 7.33 8.21	186 mm 209 mm 186 mm 209 mm	6.50 TO 7.65 7.40 TO 8.50 6.50 TO 7.65 7.40 TO 8.50	165 - 194 mm 188 - 216 mm 165 - 194 mm 188 - 216 mm	(1) (1) (1) (1)	600-128 600-152 601-132 601-152	24
11	279 mm	11Y 11A 11M 11B 11-06 11-11 11-08 11-22	6.50 8.46 8.63 9.34 6.50 8.46 8.65 9.45	165 mm 215 mm 219 mm 237 mm 165 mm 215 mm 220 mm 240 mm	5.70 TO 6.90 7.65 TO 8.75 8.00 TO 9.10 8.50 TO 9.50 5.70 TO 6.90 7.65 TO 8.75 8.15 TO 9.05 8.50 TO 9.50	145 - 175 mm 194 - 222 mm 203 - 231 mm 216 - 241 mm 145 - 175 mm 194 - 222 mm 207 - 230 mm 216 - 241 mm	(1) (1) (1) (1) (1) (1) (1) (1)	600-128 600-152 600-152 600-188 601-128 601-156 601-156 601-168	24
12	305 mm	12Y 12M 12A 12B 12-06 12-08 12-11 12-22	6.50 8.63 9.46 10.28 6.50 8.63 9.46 10.28	165 mm 219 mm 240 mm 261 mm 165 mm 219 mm 240 mm 261 mm	5.70 TO 6.90 8.00 TO 9.10 8.60 TO 9.75 9.40 TO 10.50 5.70 TO 6.90 8.00 TO 9.10 8.60 TO 9.75 9.40 TO 10.50	145 - 175 mm 203 - 231 mm 218 - 247 mm 239 - 267 mm 145 - 175 mm 203 - 231 mm 218 - 247 mm 239 - 267 mm	(1) (1) (1) (1) (1) (1) (1) (1)	600-128 600-152 600-188 600-188 601-128 601-156 601-172 601-188	24
13	330 mm	13L 13A 13B 13-10 13-22	9.65 10.40 11.03 10.65 11.03	245 mm 264 mm 280 mm 271 mm 280 mm	8.80 TO 9.90 9.50 TO 10.75 10.25 TO 11.35 9.75 TO 10.80 10.25 TO 11.35	224 - 251 mm 241 - 273 mm 260 - 288 mm 248 - 274 mm 260 - 288 mm	(1) (1) (1) (1) (1)	600-188 600-188 600-232 601-188 601-188	24
14	356 mm	14M 14A 14B	10.35 11.10 12.03	263 mm 282 mm 306 mm	9.75 TO 11.10 10.25 TO 11.30 11.25 TO 12.25	248 - 282 mm 260 - 287 mm 286 - 311 mm	(1) (1) (1)	600-188 600-232 600-232	30
16	406 mm	16Y 16L 16M 16B	10.75 12.28 12.75 14.10	273 mm 312 mm 324 mm 358 mm	10.00 TO 11.10 11.50 TO 12.50 12.05 TO 13.30 13.50 TO 14.50	254 - 282 mm 292 - 318 mm 306 - 338 mm 343 - 368 mm	(1) (1) (1) (1)	600-188 600-232 600-232 600-296	36
18	457 mm	18L 18M 18B	14.10 15.35 16.42	358 mm 390 mm 417 mm	13.20 TO 14.50 14.60 TO 15.85 15.60 TO 16.50	335 - 368 mm 371 - 403 mm 396 - 419 mm	(2) (2) (2)	600-296 600-296 600-296	36
20	508 mm	20L 20A 20B	15.92 16.92 18.17	404 mm 430 mm 462 mm	15.00 TO 16.25 16.00 TO 17.20 17.30 TO 18.50	381 - 413 mm 406 - 361 mm 439 - 470 mm	(2) (2) (2)	600-296 600-296 600-376	36
22	559 mm	22L 22M 22B	17.80 18.70 20.05	452 mm 475 mm 509 mm	17.00 TO 18.15 18.00 TO 19.50 19.15 TO 20.40	432 - 461 mm 457 - 495 mm 486 - 518 mm	(2) (2) (2)	600-376 600-376 600-376	42
24	610 mm	24L 24A 24B	19.55 21.93 22.43	497 mm 557 mm 570 mm	19.00 TO 19.75 21.00 TO 22.10 21.50 TO 22.50	472 - 502 mm 533 - 561 mm 546 - 572 mm	(2) (2) (2)	600-376 600-376 600-376	48
26	660 mm	26L 26A 26B	22.18 23.12 24.31	563 mm 587 mm 617 mm	21.30 TO 22.40 22.25 TO 23.40 23.40 TO 24.50	541 - 569 mm 565 - 594 mm 594 - 622 mm	(2) (2) (2)	600-376 600-456 600-456	48
28	711 mm	28L 28A 28B	24.31 25.13 26.32	617 mm 638 mm 669 mm	23.40 TO 24.60 24.25 TO 25.50 25.50 TO 26.50	594 - 625 mm 616 - 648 mm 648 - 673 mm	(2) (2) (2)	600-456 600-456 600-456	48
30	762 mm	30L 30A 30B	26.32 27.12 28.32	669 mm 689 mm 719 mm	25.40 TO 26.60 26.25 TO 27.40 27.40 TO 28.40	645 - 676 mm 667 - 696 mm 696 - 721 mm	(2) (2) (2)	600-456 600-456 600-456	60
32	813 mm	32L 32A 32B	28.32 29.13 29.83	719 mm 740 mm 758 mm	27.40 TO 28.60 28.25 TO 29.40 28.90 TO 30.20	696 - 726 mm 718 - 748 mm 734 - 767 mm	(4) (4) (4)	600-296 600-296 600-296	60
34	864 mm	34L 34A 34B	30.33 31.58 32.08	770 mm 802 mm 815 mm	29.50 TO 30.70 30.75 TO 31.75 31.20 TO 32.30	749 - 780 mm 781 - 806 mm 792 - 820 mm	(4) (4) (4)	600-296 600-296 600-296	60
36	914 mm	36A 36B	32.08 33.59	815 mm 853 mm	31.20 TO 32.40 32.60 TO 33.80	792 - 823 mm 828 - 859 mm	(4) (4)	600-296 600-296	72
38	965 mm	38A 38B	33.59 35.15	853 mm 893 mm	32.70 TO 33.80 34.25 TO 35.50	831 - 859 mm 870 - 902 mm	(4) (4)	600-296 600-296	72
40	1016 mm	40L 40A 40B	35.13 37.22 38.35	892 mm 945 mm 974 mm	34.25 TO 35.50 36.25 TO 37.50 37.45 TO 38.50	870 - 902 mm 921 - 953 mm 951 - 980 mm	(4) (4) (4)	600-376 600-376 600-376	72
42	1067 mm	42L 42A 42B	37.60 38.35 40.35	955 mm 974 mm 1025 mm	37.00 TO 38.00 37.45 TO 38.65 39.45 TO 40.50	940 - 965 mm 951 - 982 mm 1002 - 1029 mm	(4) (4) (4)	600-376 600-376 600-376	72
44	1118 mm	44B	42.33	1075 mm	41.60 TO 42.30	1057 - 1074 mm	(4)	600-376	84
46	1168 mm	46L 46A 46B	41.36 43.12 44.33	1051 mm 1095 mm 1126 mm	41.00 TO 41.75 42.40 TO 43.90 43.60 TO 44.30	1041 - 1060 mm 1077 - 1115 mm 1107 - 1125 mm	(4) (4) (4)	600-376 600-376 600-376	84
48	1219 mm	48A 48L 48S	45.99 44.33 44.74	1168 mm 1126 mm 1136 mm	45.20 TO 46.20 43.60 TO 45.10 44.00 TO 45.50	1148 - 1173 mm 1107 - 1146 mm 1118 - 1156 mm	(4) (4) (4)	600-376 600-376 600-376	84
50	1270 mm	50S 50S1 50S2	44.99 45.74 44.74	9 45.74 44.74 1143 mm 1162 mm 1136 mm	44.20 TO 45.70 45.00 TO 46.50 44.00 TO 45.50	1123 - 1161 mm 1143 - 1181 mm 1118 - 1156 mm	(4) (4) (4)	600-376 600-376 600-376	96
52	1321 mm	52A	49.50	1257 mm	48.80 TO 50.30	1240 - 1278 mm	(4)	600-456	96
54	1372 mm	54A 54S 54L	52.01 51.01 49.63	1321 mm 1296 mm 1261 mm	51.30 TO 52.30 50.30 TO 51.80 48.90 TO 50.40	1303 - 1328 mm 1278 - 1316 mm 1242 - 1280 mm	(4) (4) (4)	600-456 600-456 600-456	96
56	1422 mm	56A 56S	52.76 51.29	1340 mm 1303 mm	52.00 TO 53.50 50.50 TO 52.00	1321 - 1359 mm 1283 - 1321 mm	(4) (4)	600-456 600-456	96