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 (0.210 Section)

Introduction

Silicone Rubber (Si) O-Rings with a 0.210 inch cross-section are widely used sealing components in vacuum, laboratory, and industrial systems where temperature stability, flexibility, and chemical cleanliness are required. Silicone elastomers are especially valued for their broad operating temperature range and excellent resilience, making them suitable for both static sealing and applications involving thermal cycling.

Detailed Description

Silicone rubber O-rings are manufactured from high-quality silicone elastomer compounds that provide outstanding flexibility and elasticity across extreme temperature ranges. Unlike many conventional elastomers, silicone maintains its sealing performance at both low and high temperatures without becoming brittle or excessively hard.

The 0.210 section O-ring size is commonly used in vacuum flanges, chambers, and custom sealing grooves where a larger cross-section is required to accommodate surface tolerances or ensure reliable compression. Silicone rubber offers low outgassing characteristics compared with general-purpose rubbers, making it suitable for laboratory and light vacuum environments.

In addition, silicone O-rings exhibit excellent resistance to ozone, UV radiation, and aging, ensuring long service life even in exposed or high-temperature conditions. Their smooth surface finish helps achieve consistent sealing with minimal compression force.

Applications

Silicone Rubber (Si) O-Rings (0.210 Section) are commonly used in:

Vacuum chambers and laboratory equipment
Semiconductor and electronics processing tools
High-temperature sealing applications
Optical and analytical instruments
Medical and cleanroom equipment
General industrial sealing systems

Technical Parameters

Parameter	Typical Value / Range	Importance
Material	Silicone Rubber (Si)	Provides flexibility and temperature stability
Cross Section	0.210 inch	Ensures reliable compression and sealing
Color	White / Translucent	Easy visual inspection
Operating Temperature	−60 °C to +200 °C (typical)	Suitable for thermal cycling
Durometer	~50–70 Shore A	Balances flexibility and sealing force
Vacuum Compatibility	Low outgassing	Suitable for lab and light vacuum use

Comparison with Other O-Ring Materials

Material	Key Advantage	Typical Application
Silicone Rubber	Wide temperature range	High-temperature vacuum sealing
Viton® (FKM)	Chemical resistance	High vacuum and aggressive media
Buna-N (NBR)	Cost-effective	General industrial sealing

FAQ

Question	Answer
Are silicone O-rings suitable for high vacuum?	They are suitable for laboratory and light vacuum; FKM is preferred for UHV.
Can the 0.210 section be customized in diameter?	Yes, various inner diameters are available.
Do silicone O-rings resist ozone and UV?	Yes, silicone has excellent ozone and UV resistance.
Are they reusable?	In static applications, reuse is possible if no damage is present.
What color options are available?	White or translucent are standard; custom colors may be available.

Packaging

Our Silicone Rubber (Si) O-Rings (0.210 Section) are individually inspected, cleanly packaged, and sealed in protective bags to prevent contamination and deformation during storage and transportation.

Conclusion

Silicone Rubber (Si) O-Rings (0.210 Section) provide a dependable sealing solution for applications requiring flexibility, thermal stability, and long-term reliability. Their wide temperature tolerance and clean sealing performance make them a preferred choice for laboratory, vacuum, and high-temperature industrial systems.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

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	309	1200-70 Silicone	0.832	0.412	0.210	Brick Red	O-S309
	O-ring Seals, Silicone	310	1200-70 Silicone	0.895	0.475	0.210	Brick Red	O-S310
	O-ring Seals, Silicone	311	1200-70 Silicone	0.957	0.537	0.210	Brick Red	O-S311
	O-ring Seals, Silicone	312	1200-70 Silicone	1.020	0.600	0.210	Brick Red	O-S312
	O-ring Seals, Silicone	313	1200-70 Silicone	1.082	0.662	0.210	Brick Red	O-S313
	O-ring Seals, Silicone	314	1200-70 Silicone	1.145	0.725	0.210	Brick Red	O-S314
	O-ring Seals, Silicone	315	1200-70 Silicone	1.207	0.787	0.210	Brick Red	O-S315
	O-ring Seals, Silicone	316	1200-70 Silicone	1.270	0.850	0.210	Brick Red	O-S316
	O-ring Seals, Silicone	317	1200-70 Silicone	1.332	0.912	0.210	Brick Red	O-S317
	O-ring Seals, Silicone	318	1200-70 Silicone	1.395	0.975	0.210	Brick Red	O-S318
	O-ring Seals, Silicone	319	1200-70 Silicone	1.457	1.037	0.210	Brick Red	O-S319
	O-ring Seals, Silicone	320	1200-70 Silicone	1.520	1.100	0.210	Brick Red	O-S320
	O-ring Seals, Silicone	321	1200-70 Silicone	1.582	1.162	0.210	Brick Red	O-S321
	O-ring Seals, Silicone	322	1200-70 Silicone	1.645	1.225	0.210	Brick Red	O-S322
	O-ring Seals, Silicone	323	1200-70 Silicone	1.707	1.287	0.210	Brick Red	O-S323
	O-ring Seals, Silicone	324	1200-70 Silicone	1.770	1.350	0.210	Brick Red	O-S324
	O-ring Seals, Silicone	325	1200-70 Silicone	1.895	1.475	0.210	Brick Red	O-S325
	O-ring Seals, Silicone	326	1200-70 Silicone	2.020	1.600	0.210	Brick Red	O-S326
	O-ring Seals, Silicone	327	1200-70 Silicone	2.145	1.725	0.210	Brick Red	O-S327
	O-ring Seals, Silicone	328	1200-70 Silicone	2.270	1.850	0.210	Brick Red	O-S328
	O-ring Seals, Silicone	329	1200-70 Silicone	2.395	1.975	0.210	Brick Red	O-S329
	O-ring Seals, Silicone	330	1200-70 Silicone	2.520	2.100	0.210	Brick Red	O-S330
	O-ring Seals, Silicone	331	1200-70 Silicone	2.645	2.225	0.210	Brick Red	O-S331
	O-ring Seals, Silicone	332	1200-70 Silicone	2.770	2.350	0.210	Brick Red	O-S332
	O-ring Seals, Silicone	333	1200-70 Silicone	2.895	2.475	0.210	Brick Red	O-S333
	O-ring Seals, Silicone	334	1200-70 Silicone	3.020	2.600	0.210	Brick Red	O-S334
	O-ring Seals, Silicone	335	1200-70 Silicone	3.145	2.725	0.210	Brick Red	O-S335
	O-ring Seals, Silicone	336	1200-70 Silicone	3.270	2.850	0.210	Brick Red	O-S336
	O-ring Seals, Silicone	337	1200-70 Silicone	3.395	2.975	0.210	Brick Red	O-S337
	O-ring Seals, Silicone	338	1200-70 Silicone	3.520	3.100	0.210	Brick Red	O-S338
	O-ring Seals, Silicone	339	1200-70 Silicone	3.645	3.225	0.210	Brick Red	O-S339
	O-ring Seals, Silicone	340	1200-70 Silicone	3.770	3.350	0.210	Brick Red	O-S340
	O-ring Seals, Silicone	341	1200-70 Silicone	3.895	3.475	0.210	Brick Red	O-S341
	O-ring Seals, Silicone	342	1200-70 Silicone	4.020	3.600	0.210	Brick Red	O-S342
	O-ring Seals, Silicone	343	1200-70 Silicone	4.145	3.725	0.210	Brick Red	O-S343
	O-ring Seals, Silicone	344	1200-70 Silicone	4.270	3.850	0.210	Brick Red	O-S344
	O-ring Seals, Silicone	345	1200-70 Silicone	4.395	3.975	0.210	Brick Red	O-S345
	O-ring Seals, Silicone	346	1200-70 Silicone	4.520	4.100	0.210	Brick Red	O-S346
	O-ring Seals, Silicone	347	1200-70 Silicone	4.645	4.225	0.210	Brick Red	O-S347
	O-ring Seals, Silicone	348	1200-70 Silicone	4.770	4.350	0.210	Brick Red	O-S348
	O-ring Seals, Silicone	349	1200-70 Silicone	4.895	4.475	0.210	Brick Red	O-S349
	O-ring Seals, Silicone	350	1200-70 Silicone	5.020	4.600	0.210	Brick Red	O-S350
	O-ring Seals, Silicone	351	1200-70 Silicone	5.145	4.725	0.210	Brick Red	O-S351
	O-ring Seals, Silicone	352	1200-70 Silicone	5.270	4.850	0.210	Brick Red	O-S352
	O-ring Seals, Silicone	353	1200-70 Silicone	5.395	4.975	0.210	Brick Red	O-S353
	O-ring Seals, Silicone	354	1200-70 Silicone	5.520	5.100	0.210	Brick Red	O-S354
	O-ring Seals, Silicone	355	1200-70 Silicone	5.645	5.225	0.210	Brick Red	O-S355
	O-ring Seals, Silicone	356	1200-70 Silicone	5.770	5.350	0.210	Brick Red	O-S356
	O-ring Seals, Silicone	357	1200-70 Silicone	5.895	5.475	0.210	Brick Red	O-S357
	O-ring Seals, Silicone	358	1200-70 Silicone	6.020	5.600	0.210	Brick Red	O-S358
	O-ring Seals, Silicone	359	1200-70 Silicone	6.145	5.725	0.210	Brick Red	O-S359
	O-ring Seals, Silicone	360	1200-70 Silicone	6.270	5.850	0.210	Brick Red	O-S360
	O-ring Seals, Silicone	361	1200-70 Silicone	6.395	5.975	0.210	Brick Red	O-S361
	O-ring Seals, Silicone	362	1200-70 Silicone	6.645	6.225	0.210	Brick Red	O-S362
	O-ring Seals, Silicone	363	1200-70 Silicone	6.895	6.475	0.210	Brick Red	O-S363
	O-ring Seals, Silicone	364	1200-70 Silicone	7.145	6.725	0.210	Brick Red	O-S364
	O-ring Seals, Silicone	365	1200-70 Silicone	7.395	6.975	0.210	Brick Red	O-S365
	O-ring Seals, Silicone	366	1200-70 Silicone	7.645	7.225	0.210	Brick Red	O-S366
	O-ring Seals, Silicone	367	1200-70 Silicone	7.895	7.475	0.210	Brick Red	O-S367
	O-ring Seals, Silicone	368	1200-70 Silicone	8.145	7.725	0.210	Brick Red	O-S368
	O-ring Seals, Silicone	369	1200-70 Silicone	8.395	7.975	0.210	Brick Red	O-S369
	O-ring Seals, Silicone	370	1200-70 Silicone	8.645	8.225	0.210	Brick Red	O-S370
	O-ring Seals, Silicone	371	1200-70 Silicone	8.895	8.475	0.210	Brick Red	O-S371
	O-ring Seals, Silicone	372	1200-70 Silicone	9.145	8.725	0.210	Brick Red	O-S372
	O-ring Seals, Silicone	373	1200-70 Silicone	9.395	8.975	0.210	Brick Red	O-S373
	O-ring Seals, Silicone	374	1200-70 Silicone	9.645	9.225	0.210	Brick Red	O-S374
	O-ring Seals, Silicone	375	1200-70 Silicone	9.895	9.475	0.210	Brick Red	O-S375
	O-ring Seals, Silicone	376	1200-70 Silicone	10.145	9.725	0.210	Brick Red	O-S376
	O-ring Seals, Silicone	377	1200-70 Silicone	10.395	9.975	0.210	Brick Red	O-S377
	O-ring Seals, Silicone	378	1200-70 Silicone	10.895	10.475	0.210	Brick Red	O-S378
	O-ring Seals, Silicone	379	1200-70 Silicone	11.395	10.975	0.210	Brick Red	O-S379
	O-ring Seals, Silicone	380	1200-70 Silicone	11.895	11.475	0.210	Brick Red	O-S380
	O-ring Seals, Silicone	381	1200-70 Silicone	12.395	11.975	0.210	Brick Red	O-S381
	O-ring Seals, Silicone	382	1200-70 Silicone	13.395	12.975	0.210	Brick Red	O-S382
	O-ring Seals, Silicone	383	1200-70 Silicone	14.395	13.975	0.210	Brick Red	O-S383
	O-ring Seals, Silicone	384	1200-70 Silicone	15.395	14.975	0.210	Brick Red	O-S384
	O-ring Seals, Silicone	385	1200-70 Silicone	16.375	15.955	0.210	Brick Red	O-S385
	O-ring Seals, Silicone	386	1200-70 Silicone	17.375	16.955	0.210	Brick Red	O-S386
	O-ring Seals, Silicone	387	1200-70 Silicone	18.375	17.955	0.210	Brick Red	O-S387
	O-ring Seals, Silicone	388	1200-70 Silicone	19.375	18.955	0.210	Brick Red	O-S388
	O-ring Seals, Silicone	389	1200-70 Silicone	20.375	19.955	0.210	Brick Red	O-S389
	O-ring Seals, Silicone	390	1200-70 Silicone	21.375	20.955	0.210	Brick Red	O-S390
	O-ring Seals, Silicone	391	1200-70 Silicone	22.375	21.955	0.210	Brick Red	O-S391
	O-ring Seals, Silicone	392	1200-70 Silicone	23.360	22.940	0.210	Brick Red	O-S392
	O-ring Seals, Silicone	393	1200-70 Silicone	24.360	23.940	0.210	Brick Red	O-S393
	O-ring Seals, Silicone	394	1200-70 Silicone	25.360	24.940	0.210	Brick Red	O-S394
	O-ring Seals, Silicone	395	1200-70 Silicone	26.360	25.940	0.210	Brick Red	O-S395