Ultra-Chemical-Resistant Kalrez 4079 O-Rings

	Dash Number Dash Number

001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
018
019
020
021
022
023
024
025
026
027
028
029
030
031
032
033
034
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
131
132
137
142
152
201
202
203
204
206
207
208
210
211
212
213
214
215
216
217
218
220
221
222
223
224
225
226
227
228
229
230
231
232
234
235
236
238
239
243
250
256
257
259
314
318
320
330
339

	Cross Section Shape Cross Section Shape

	Round

	Maximum Temperature Maximum Temperature

500° F or greater

	Material Material

Rubber

	System of Measurement System of Measurement

Inch

Metric

	ID ID

	OD OD

	Width Width

	O-Ring Grade O-Ring Grade

4079

	For Use With For Use With

	Hardness Hardness

Durometer 75A

	Color Color

	Black

	Hardness Rating Hardness Rating

	Medium

	Fractional OD Fractional OD

	Fractional Width Fractional Width

	Fractional ID Fractional ID

	Minimum Temperature Minimum Temperature

Greater than 0° F

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Specifications Met Specifications Met

126 Products

About O-Rings

Ultra-Chemical-Resistant Kalrez 4079 O-Rings

Inherently softer and more compressible than PTFE O-rings, these Kalrez 4079 O-rings have comparable chemical resistance. Use them with acetone, methyl ethyl ketone (MEK), potassium hydroxide, and most acids. They have a round profile and are suitable for a wide range of static and dynamic sealing applications.

Inch O-rings have a dash number and are sized to the SAE standard AS568.

Metric O-rings are sized to the actual measured inside diameter.

For technical drawings and 3-D models, click on a part number.

Inch

	Fractional		Actual
Dash Number	ID	OD	ID	OD	Hardness	Specifications Met	Temperature Range, °F	Color		Each
Wd.: 1/32 Fractional (0.04" Actual)
001	1/32	3/32	0.029"	0.109"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
Wd.: 3/64 Fractional (0.05" Actual)
002	3/64	9/64	0.042"	0.142"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
Wd.: 1/16 Fractional (0.06" Actual)
003	1/16	3/16	0.056"	0.176"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
Wd.: 1/16 Fractional (0.07" Actual)
004	5/64	13/64	0.07"	0.21"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
005	3/32	7/32	0.101"	0.241"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
006	1/8	1/4	0.114"	0.254"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
007	5/32	9/32	0.145"	0.285"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
008	3/16	5/16	0.176"	0.316"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
009	7/32	11/32	0.208"	0.348"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
010	1/4	3/8	0.239"	0.379"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
011	5/16	7/16	0.301"	0.441"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
012	3/8	1/2	0.364"	0.504"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
013	7/16	9/16	0.426"	0.566"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
014	1/2	5/8	0.489"	0.629"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
015	9/16	11/16	0.551"	0.691"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
016	5/8	3/4	0.614"	0.754"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
017	11/16	13/16	0.676"	0.816"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
018	3/4	7/8	0.739"	0.879"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
019	13/16	15/16	0.801"	0.941"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
020	7/8	1	0.864"	1.004"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
021	15/16	1 1/16	0.926"	1.066"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
022	1	1 1/8	0.989"	1.129"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
023	1 1/16	1 3/16	1.051"	1.191"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
024	1 1/8	1 1/4	1.114"	1.254"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
025	1 3/16	1 5/16	1.176"	1.316"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
026	1 1/4	1 3/8	1.239"	1.379"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
027	1 5/16	1 7/16	1.301"	1.441"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
028	1 3/8	1 1/2	1.364"	1.504"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
029	1 1/2	1 5/8	1.489"	1.629"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
030	1 5/8	1 3/4	1.614"	1.754"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
031	1 3/4	1 7/8	1.739"	1.879"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
032	1 7/8	2	1.864"	2.004"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
033	2	2 1/8	1.989"	2.129"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
034	2 1/8	2 1/4	2.114"	2.254"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
Wd.: 3/32 Fractional (0.103" Actual)
104	1/8	5/16	0.112"	0.318"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
105	5/32	11/32	0.143"	0.349"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
106	3/16	3/8	0.174"	0.38"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
107	7/32	13/32	0.206"	0.412"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
108	1/4	7/16	0.237"	0.443"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
109	5/16	1/2	0.299"	0.505"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
110	3/8	9/16	0.362"	0.568"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
111	7/16	5/8	0.424"	0.63"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
112	1/2	11/16	0.487"	0.693"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
113	9/16	3/4	0.549"	0.755"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
114	5/8	13/16	0.612"	0.818"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
115	11/16	7/8	0.674"	0.88"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
116	3/4	15/16	0.737"	0.943"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
117	13/16	1	0.799"	1.005"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
118	7/8	1 1/16	0.862"	1.068"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
119	15/16	1 1/8	0.924"	1.13"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
120	1	1 3/16	0.987"	1.193"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
121	1 1/16	1 1/4	1.049"	1.255"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
122	1 1/8	1 5/16	1.112"	1.318"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
123	1 3/16	1 3/8	1.174"	1.38"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
124	1 1/4	1 7/16	1.237"	1.443"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
125	1 5/16	1 1/2	1.299"	1.505"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
126	1 3/8	1 9/16	1.362"	1.568"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
127	1 7/16	1 5/8	1.424"	1.63"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
128	1 1/2	1 11/16	1.487"	1.693"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
129	1 9/16	1 3/4	1.549"	1.755"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
131	1 11/16	1 7/8	1.674"	1.88"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
132	1 3/4	1 15/16	1.737"	1.943"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
137	2 1/16	2 1/4	2.05"	2.256"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
142	2 3/8	2 9/16	2.362"	2.568"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
152	3 1/4	3 7/16	3.237"	3.443"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
Wd.: 1/8 Fractional (0.139" Actual)
201	3/16	7/16	0.171"	0.449"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
202	1/4	1/2	0.234"	0.512"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
203	5/16	9/16	0.296"	0.574"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
204	3/8	5/8	0.359"	0.637"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
206	1/2	3/4	0.484"	0.762"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
207	9/16	13/16	0.546"	0.824"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	00000
208	5/8	7/8	0.609"	0.887"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
210	3/4	1	0.734"	1.012"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
211	13/16	1 1/16	0.796"	1.074"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	00000
212	7/8	1 1/8	0.859"	1.137"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
213	15/16	1 3/16	0.921"	1.199"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
214	1	1 1/4	0.984"	1.262"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
215	1 1/16	1 5/16	1.046"	1.324"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
216	1 1/8	1 3/8	1.109"	1.387"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
217	1 3/16	1 7/16	1.171"	1.449"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
218	1 1/4	1 1/2	1.234"	1.512"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
220	1 3/8	1 5/8	1.359"	1.637"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
221	1 7/16	1 11/16	1.421"	1.699"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
222	1 1/2	1 3/4	1.484"	1.762"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
223	1 5/8	1 7/8	1.609"	1.887"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
224	1 3/4	2	1.734"	2.012"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
225	1 7/8	2 1/8	1.859"	2.137"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
226	2	2 1/4	1.984"	2.262"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
227	2 1/8	2 3/8	2.109"	2.387"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	0000000	000000
228	2 1/4	2 1/2	2.234"	2.512"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
229	2 3/8	2 5/8	2.359"	2.637"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
230	2 1/2	2 3/4	2.484"	2.762"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
231	2 5/8	2 7/8	2.609"	2.887"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
232	2 3/4	3	2.734"	3.012"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
234	3	3 1/4	2.984"	3.262"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
235	3 1/8	3 3/8	3.109"	3.387"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
236	3 1/4	3 1/2	3.234"	3.512"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
238	3 1/2	3 3/4	3.484"	3.762"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
239	3 5/8	3 7/8	3.609"	3.887"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
243	4 1/8	4 3/8	4.109"	4.387"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
250	5	5 1/4	4.984"	5.262"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
256	5 3/4	6	5.734"	6.012"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
257	5 7/8	6 1/8	5.859"	6.137"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
259	6 1/4	6 1/2	6.234"	6.512"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
Wd.: 3/16 Fractional (0.21" Actual)
314	3/4	1 1/8	0.725"	1.145"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
318	1	1 3/8	0.975"	1.395"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
320	1 1/8	1 1/2	1.1"	1.52"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
330	2 1/8	2 1/2	2.1"	2.52"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000
339	3 1/4	3 5/8	3.225"	3.645"	Durometer 75A (Medium)	ASTM D2000, SAE AS568, SAE J200	30° to 600°	Black	00000000	000000

Metric

1.5 mm Wide
ID, mm	OD, mm	Hardness	Temperature Range, °F	Color		Each
2.5	5.5	Durometer 75A	30° to 600°	Black	0000000	000000
3.5	6.5	Durometer 75A	30° to 600°	Black	0000000	00000
7.5	10.5	Durometer 75A	30° to 600°	Black	0000000	00000
9	12	Durometer 75A	30° to 600°	Black	0000000	00000
12	15	Durometer 75A	30° to 600°	Black	0000000	00000
1.6 mm Wide
9.1	12.3	Durometer 75A	30° to 600°	Black	0000000	00000
2 mm Wide
4	8	Durometer 75A	30° to 600°	Black	0000000	00000
6	10	Durometer 75A	30° to 600°	Black	0000000	00000
12	16	Durometer 75A	30° to 600°	Black	0000000	000000
13	17	Durometer 75A	30° to 600°	Black	0000000	000000
14	18	Durometer 75A	30° to 600°	Black	0000000	000000
16	20	Durometer 75A	30° to 600°	Black	0000000	000000
18	22	Durometer 75A	30° to 600°	Black	0000000	000000
20	24	Durometer 75A	30° to 600°	Black	0000000	000000
22	26	Durometer 75A	30° to 600°	Black	0000000	000000
26	30	Durometer 75A	30° to 600°	Black	0000000	000000
2.5 mm Wide
15	20	Durometer 75A	30° to 600°	Black	0000000	000000