Piston Seal

K41 - Piston Seal

General Features
Technicial Specifications

KASTAŞ NO	D (H8)	d(h9)	B(-0/+0,2)	r	n	o rıng
K41-012	12	7,1	2,2	0,6	4,5	6,75x1,78
K41-018	18	10,7	3,2	0,6	4,5	9,92x2,62
K41-022	22	14,7	3,2	0,6	4,5	13,95x2,62
K41-025	25	17,7	3,2	0,6	4,5	17,13x2,62
K41-030	30	19,3	4,2	1	6	18,66x3,53
K41-030/1	30	22,7	3,2	0,6	4,5	21,89x2,62
K41-032	32	21,3	4,2	1	6	20,22x3,53
K41-040	40	29,3	4,2	1	6	28,17x3,53
K41-045	45	34,3	4,2	1	6	32,92X3,53
K41-050	50	39,3	4,2	1	6	37,69x3,53
K41-050/1	50	34,9	6,3	1	6	34,29x5,33
K41-055	55	44,3	4,2	1	6	44,04X3,53
K41-060	60	44,9	6,3	1,3	8	43,82x5,33
K41-060/1	60	49,3	4,2	1	6	49,21X3,53
K41-063	63	47,9	6,3	1,3	8	46,99x5,33
K41-065	65	49,9	6,3	1,3	8	46,99x5,33
K41-070	70	59,3	4,2	1	6	56,74x3,53
K41-070/1	70	54,9	6,3	1,3	8	53,34x5,33
K41-075	75	59,9	6,3	1,3	8	56,52x5,33
K41-080	80	64,9	6,3	1,3	8	62,87x5,33
K41-085	85	69,9	6,3	1,3	8	69,22x5,33
K41-090	90	74,9	6,3	1,3	8	72,39x5,33
K41-090/1	90	69,5	8,1	1,3	8	68x6,99
K41-095	95	79,9	6,3	1,3	8	78,74x5,33
K41-100	100	84,9	6,3	1,3	8	81,92x5,33
K41-110	110	94,9	6,3	1,3	8	91,44x5,33
K41-115	115	99,9	6,3	1,3	8	97,79x5,33
K41-120	120	104,9	6,3	1,3	8	104,14x5,3
K41-125	125	109,9	6,3	1,3	8	107,32X5,3
K41-130	130	109,5	8,1	1,8	10,25	108x7
K41-130/1	130	114,9	6,3	1,3	8	113,67x5,3
K41-140	140	124,9	6,3	1,3	8	123,8x5,33
K41-150	150	134,9	6,3	1,3	8	133,35x5,3
K41-160	160	144,9	6,3	1,3	8	142,24x5,3
K41-160/1	160	139,5	8,1	1,8	10,25	135,89x6,9
K41-170	170	154,9	6,3	1,3	8	151,77x5,3
K41-180	180	164,9	6,3	1,3	8	164,47x5,3
K41-180/1	180	159,5	8,1	1,8	10,25	158,12x6,9
K41-190	190	174,9	6,3	1,3	8	170,82x5,3
K41-200	200	179,5	8,1	1,8	10,25	177,17x6,9
K41-210	210	189,5	8,1	1,8	10,25	183,52x6,9
K41-215	215	194,5	8,1	1,8	10,25	193,70x6,9
K41-220	220	199,5	8,1	1,8	10,25	196,22x6,9
K41-225	225	204,5	8,1	1,8	10,25	202,57x6,9
K41-230	230	209,5	8,1	1,8	10,25	202,57x6,9
K41-240	240	219,5	8,1	1,8	10,25	215,27x6,9
K41-250	250	229,5	8,1	1,8	10,25	227,97x6,9
K41-260	260	236	8,1	1,8	12	227,97x6,9
K41-270	270	246	8,1	1,8	12	240,67x6,9
K41-280	280	256	8,1	1,8	12	253,37x6,9
K41-290	290	266	8,1	1,8	12	259,70x6,9
K41-300	300	276	8,1	1,8	12	266,07x6,9
K41-320	320	296	8,1	1,8	12	291,47x6,9
K41-340	340	316	8,1	1,8	12	316,87x6,9
K41-350	350	326	8,1	1,8	12	316,87x6,9
K41-370	370	346	8,1	1,8	12	342,27x6,9
K41-380	380	356	8,1	1,8	10,25	354,9x6,99
K41-400	400	376	8,1	1,8	10,25	367,67X6,9
K41-450	450	426	8,1	1,8	10,25	417,96X6,9
K41-460	460	436	8,1	1,8	12	430,66x6,9
K41-480	480	456	8,1	1,8	10,25	456,06X6,9
K41-500	500	476	8,1	1,8	12	468,76x6,9

K41 is a two piece single acting piston seal which consists of one special mixture PTFE prole ring and an o-ring as energizing element.

PRODUCT ADVANTAGES
• Low friction , free of stick-slip
• Simple groove design and low axial housing heights
• Long service life
• High sliding speed
• Wide range of temperature and chemicals depending on the o-ring material
• Minimum static and dynamic friction coefficient for a minimum energy loss and operating temperature
• Wide range of dimensions

APPLICATION
Injection moulding machines , fork-lift trucks , loading platforms , cranes , agricultural machinery and valves for hydraulic and pneumatic systems.

MATERIAL		CODE
NBR	70 SHORE A	NB^₇₀₀₁
PTFE		PT^₆₀₀₃

OPERATING CONDITIONS

MEDIA

Mineral oils(DIN 51524)

HFA and HFB

HFC

TEMPERATURE

-30°C +105°C

+5°C +60°C

-30°C +60°C

PRESSURE

≤400 Bar

SPEED

≤5.0 m/sn

Note: The above data are maximum values and cannot be used at the same time.

SURFACE ROUGHNESS	Ra	Rmax
Sliding Surface ØD	≤0.2 μm	≤2.0 μm
Groove Base Ød	≤1.6 μm	≤6.3 μm
Groove Flanks B	≤3.2 μm	≤15 μm
Note: It is recommended to have 50% to 90% of the working surface material contact area value.
INSTALLATION We recommend using special assembly tool (See section; Hydraulic Sealing Elements General Installation Information) and to have open groove design for dimensions that are smaller than Ø 40 mm. It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil. NOTESIt is recommended to use with minimum two piston guide rings in long stroke cylinders , minimum one guide ring in short stroke and under low radial loads. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material. The permissible sealing gap values of K41 piston seal is given in the below table.

PERMISSIBLE SEALING GAP

B (mm)	Smax (mm)
	150 Bar	250 Bar	400 Bar
3.2	0.4	0.25	0.15
4.2	0.4	0.25	0.20
6.3	0.5	0.30	0.20
8.1	0.6	0.35	0.25
9.5	0.7	0.50	0.30

Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.