What factors should I consider when choosing the right sputtering target?

Consider the material composition, purity, target size, and application-specific requirements such as the thickness and uniformity of the film.

Do you offer custom sputtering targets or evaporation materials?

Yes, we offer customized sputtering targets, evaporation materials, and crucibles to meet specific customer requirements for size, material composition, and purity.

Can you provide advice on the optimal material for a specific thin film application?

Yes, we can assist in selecting the most suitable material based on your application, whether it’s for optical coatings, semiconductor fabrication, or decorative finishes.

Can you supply small quantities of materials for research and development purposes?

Yes, we offer both bulk and small quantities of sputtering targets, evaporation materials, and spherical powders to support research, prototyping, and development projects.

Silicone Rubber (Si) O-Rings (0.139 Section)

Silicone Rubber (Si) O-Rings (0.139 Section): Compact, High-Purity Sealing for Static Vacuum and Gas Systems

Silicone Rubber (Si) O-Rings (0.139 section) from TFM are designed to deliver consistent sealing in low-pressure gas, vacuum, and environmentally sensitive systems. Manufactured from 1200-70 grade silicone, these compact-profile O-rings are highly resistant to ozone, water, mild acids, and UV exposure, while maintaining elasticity and dimensional stability over a broad operating range from –50°C to +230°C.

Featuring a 0.139-inch cross-section and a 70 Shore A durometer, these O-rings are an ideal choice for tight tolerance static sealing applications in UHV-compatible assemblies, instrument ports, and cleanroom devices.

Key Features of Silicone Rubber (Si) O-Rings (0.139 Section):

Material Grade: 1200-70 Silicone
Durometer Hardness: 70 Shore A
Color: Brick Red
Cross-Section Diameter: 0.139 inches
Temperature Range:
- Low Limit: –50°C
- High Limit: +230°C
  Suitable for moderate bakeouts and wide temperature fluctuations.
Chemical Resistance:
- Excellent: Ozone, oxygen, water, mild acids, and weathering
- Limited: Resistance to petroleum-based fluids and strong solvents
Ideal For:
- Sealing miniature vacuum viewports and feedthroughs
- Static seals in semiconductor and biotech process equipment
- Gas panel ports, sensor assemblies, and analytical instrumentation
- Clean and inert applications in food, pharma, and medical utilities

TFM’s Silicone Rubber (Si) O-Rings (0.139 section) offer high reliability in critical sealing areas where thermal flexibility, material purity, and ozone resistance are essential.

Ordering Table

Drawing	Reference	O-Ring Size	O-Ring Material	O-Ring OD	O-Ring ID	O-Ring Cross Section	O-Ring Color	Part Number
	O-ring Seals, Silicone	201	1200-70 Silicone	0.449	0.171	0.139	Brick Red	O-S201
	O-ring Seals, Silicone	202	1200-70 Silicone	0.512	0.234	0.139	Brick Red	O-S202
	O-ring Seals, Silicone	203	1200-70 Silicone	0.574	0.296	0.139	Brick Red	O-S203
	O-ring Seals, Silicone	204	1200-70 Silicone	0.637	0.359	0.139	Brick Red	O-S204
	O-ring Seals, Silicone	205	1200-70 Silicone	0.699	0.421	0.139	Brick Red	O-S205
	O-ring Seals, Silicone	206	1200-70 Silicone	0.762	0.484	0.139	Brick Red	O-S206
	O-ring Seals, Silicone	207	1200-70 Silicone	0.824	0.546	0.139	Brick Red	O-S207
	O-ring Seals, Silicone	208	1200-70 Silicone	0.887	0.609	0.139	Brick Red	O-S208
	O-ring Seals, Silicone	209	1200-70 Silicone	0.949	0.671	0.139	Brick Red	O-S209
	O-ring Seals, Silicone	210	1200-70 Silicone	1.012	0.734	0.139	Brick Red	O-S210
	O-ring Seals, Silicone	211	1200-70 Silicone	1.074	0.796	0.139	Brick Red	O-S211
	O-ring Seals, Silicone	212	1200-70 Silicone	1.137	0.859	0.139	Brick Red	O-S212
	O-ring Seals, Silicone	213	1200-70 Silicone	1.199	0.921	0.139	Brick Red	O-S213
	O-ring Seals, Silicone	214	1200-70 Silicone	1.262	0.984	0.139	Brick Red	O-S214
	O-ring Seals, Silicone	215	1200-70 Silicone	1.324	1.046	0.139	Brick Red	O-S215
	O-ring Seals, Silicone	216	1200-70 Silicone	1.387	1.109	0.139	Brick Red	O-S216
	O-ring Seals, Silicone	217	1200-70 Silicone	1.449	1.171	0.139	Brick Red	O-S217
	O-ring Seals, Silicone	218	1200-70 Silicone	1.512	1.234	0.139	Brick Red	O-S218
	O-ring Seals, Silicone	219	1200-70 Silicone	1.574	1.296	0.139	Brick Red	O-S219
	O-ring Seals, Silicone	220	1200-70 Silicone	1.637	1.359	0.139	Brick Red	O-S220
	O-ring Seals, Silicone	221	1200-70 Silicone	1.699	1.421	0.139	Brick Red	O-S221
	O-ring Seals, Silicone	222	1200-70 Silicone	1.762	1.484	0.139	Brick Red	O-S222
	O-ring Seals, Silicone	223	1200-70 Silicone	1.887	1.609	0.139	Brick Red	O-S223
	O-ring Seals, Silicone	224	1200-70 Silicone	2.012	1.734	0.139	Brick Red	O-S224
	O-ring Seals, Silicone	225	1200-70 Silicone	2.137	1.859	0.139	Brick Red	O-S225
	O-ring Seals, Silicone	226	1200-70 Silicone	2.262	1.984	0.139	Brick Red	O-S226
	O-ring Seals, Silicone	227	1200-70 Silicone	2.387	2.109	0.139	Brick Red	O-S227
	O-ring Seals, Silicone	228	1200-70 Silicone	2.512	2.234	0.139	Brick Red	O-S228
	O-ring Seals, Silicone	229	1200-70 Silicone	2.637	2.359	0.139	Brick Red	O-S229
	O-ring Seals, Silicone	230	1200-70 Silicone	2.762	2.484	0.139	Brick Red	O-S230
	O-ring Seals, Silicone	231	1200-70 Silicone	2.887	2.609	0.139	Brick Red	O-S231
	O-ring Seals, Silicone	232	1200-70 Silicone	3.012	2.734	0.139	Brick Red	O-S232
	O-ring Seals, Silicone	233	1200-70 Silicone	3.137	2.859	0.139	Brick Red	O-S233
	O-ring Seals, Silicone	234	1200-70 Silicone	3.262	2.984	0.139	Brick Red	O-S234
	O-ring Seals, Silicone	235	1200-70 Silicone	3.387	3.109	0.139	Brick Red	O-S235
	O-ring Seals, Silicone	236	1200-70 Silicone	3.512	3.234	0.139	Brick Red	O-S236
	O-ring Seals, Silicone	237	1200-70 Silicone	3.637	3.359	0.139	Brick Red	O-S237
	O-ring Seals, Silicone	238	1200-70 Silicone	3.762	3.484	0.139	Brick Red	O-S238
	O-ring Seals, Silicone	239	1200-70 Silicone	3.887	3.609	0.139	Brick Red	O-S239
	O-ring Seals, Silicone	240	1200-70 Silicone	4.012	3.734	0.139	Brick Red	O-S240
	O-ring Seals, Silicone	241	1200-70 Silicone	4.137	3.859	0.139	Brick Red	O-S241
	O-ring Seals, Silicone	242	1200-70 Silicone	4.262	3.984	0.139	Brick Red	O-S242
	O-ring Seals, Silicone	243	1200-70 Silicone	4.387	4.109	0.139	Brick Red	O-S243
	O-ring Seals, Silicone	244	1200-70 Silicone	4.512	4.234	0.139	Brick Red	O-S244
	O-ring Seals, Silicone	245	1200-70 Silicone	4.637	4.359	0.139	Brick Red	O-S245
	O-ring Seals, Silicone	246	1200-70 Silicone	4.762	4.484	0.139	Brick Red	O-S246
	O-ring Seals, Silicone	247	1200-70 Silicone	4.887	4.609	0.139	Brick Red	O-S247
	O-ring Seals, Silicone	248	1200-70 Silicone	5.012	4.734	0.139	Brick Red	O-S248
	O-ring Seals, Silicone	249	1200-70 Silicone	5.137	4.859	0.139	Brick Red	O-S249
	O-ring Seals, Silicone	250	1200-70 Silicone	5.262	4.984	0.139	Brick Red	O-S250
	O-ring Seals, Silicone	251	1200-70 Silicone	5.387	5.109	0.139	Brick Red	O-S251
	O-ring Seals, Silicone	252	1200-70 Silicone	5.512	5.234	0.139	Brick Red	O-S252
	O-ring Seals, Silicone	253	1200-70 Silicone	5.637	5.359	0.139	Brick Red	O-S253
	O-ring Seals, Silicone	254	1200-70 Silicone	5.762	5.484	0.139	Brick Red	O-S254
	O-ring Seals, Silicone	255	1200-70 Silicone	5.887	5.609	0.139	Brick Red	O-S255
	O-ring Seals, Silicone	256	1200-70 Silicone	6.012	5.734	0.139	Brick Red	O-S256
	O-ring Seals, Silicone	257	1200-70 Silicone	6.137	5.859	0.139	Brick Red	O-S257
	O-ring Seals, Silicone	258	1200-70 Silicone	6.262	5.984	0.139	Brick Red	O-S258
	O-ring Seals, Silicone	259	1200-70 Silicone	6.512	6.234	0.139	Brick Red	O-S259
	O-ring Seals, Silicone	260	1200-70 Silicone	6.762	6.484	0.139	Brick Red	O-S260
	O-ring Seals, Silicone	261	1200-70 Silicone	7.012	6.734	0.139	Brick Red	O-S261
	O-ring Seals, Silicone	262	1200-70 Silicone	7.262	6.984	0.139	Brick Red	O-S262
	O-ring Seals, Silicone	263	1200-70 Silicone	7.512	7.234	0.139	Brick Red	O-S263
	O-ring Seals, Silicone	264	1200-70 Silicone	7.762	7.484	0.139	Brick Red	O-S264
	O-ring Seals, Silicone	265	1200-70 Silicone	8.012	7.734	0.139	Brick Red	O-S265
	O-ring Seals, Silicone	266	1200-70 Silicone	8.262	7.984	0.139	Brick Red	O-S266
	O-ring Seals, Silicone	267	1200-70 Silicone	8.512	8.234	0.139	Brick Red	O-S267
	O-ring Seals, Silicone	268	1200-70 Silicone	8.762	8.484	0.139	Brick Red	O-S268
	O-ring Seals, Silicone	269	1200-70 Silicone	9.012	8.734	0.139	Brick Red	O-S269
	O-ring Seals, Silicone	270	1200-70 Silicone	9.262	8.984	0.139	Brick Red	O-S270
	O-ring Seals, Silicone	271	1200-70 Silicone	9.512	9.234	0.139	Brick Red	O-S271
	O-ring Seals, Silicone	272	1200-70 Silicone	9.762	9.484	0.139	Brick Red	O-S272
	O-ring Seals, Silicone	273	1200-70 Silicone	10.012	9.734	0.139	Brick Red	O-S273
	O-ring Seals, Silicone	274	1200-70 Silicone	10.262	9.984	0.139	Brick Red	O-S274
	O-ring Seals, Silicone	275	1200-70 Silicone	10.762	10.484	0.139	Brick Red	O-S275
	O-ring Seals, Silicone	276	1200-70 Silicone	11.262	10.984	0.139	Brick Red	O-S276
	O-ring Seals, Silicone	277	1200-70 Silicone	11.762	11.484	0.139	Brick Red	O-S277
	O-ring Seals, Silicone	278	1200-70 Silicone	12.262	11.984	0.139	Brick Red	O-S278
	O-ring Seals, Silicone	279	1200-70 Silicone	13.262	12.984	0.139	Brick Red	O-S279
	O-ring Seals, Silicone	280	1200-70 Silicone	14.262	13.984	0.139	Brick Red	O-S280
	O-ring Seals, Silicone	281	1200-70 Silicone	15.262	14.984	0.139	Brick Red	O-S281
	O-ring Seals, Silicone	282	1200-70 Silicone	16.233	15.955	0.139	Brick Red	O-S282
	O-ring Seals, Silicone	283	1200-70 Silicone	17.233	16.955	0.139	Brick Red	O-S283
	O-ring Seals, Silicone	284	1200-70 Silicone	18.233	17.955	0.139	Brick Red	O-S284